Anatomy and Physiology of Speech and Hearing Mechanisms – Flashcards
Unlock all answers in this set
Unlock answersquestion
types of connective tissue
answer
tendons ligaments cartilage bone
question
nearest; closer to the body
answer
proximal
question
prefix for "not having something"
answer
a-
question
pertaining to one side
answer
lateral
question
non-elastic, tough fibers
answer
tendons
question
blood carries _______ of metabolism away fro the cells of the body
answer
bi-products
question
(os)
answer
bone
question
how are the different tissues categorized by?
answer
different amounts of kinds of intercellular material and different shapes of cells
question
cilia has a _______ function
answer
cleansing
question
this cartilage forms structures like the larynx and trachea
answer
hyoid cartilage
question
toward the outward surface or part
answer
peripheral
question
suffix for "inflammation"
answer
-itis
question
what are all the anatomical positions?
answer
superior/inferior cranial/caudal dorsal/ventral posterior/anterior proximal/distal medial/lateral
question
head
answer
cranial
question
power units of cells
answer
mitochondria
question
a vertical longitudinal slice that divides the body into a left and right part
answer
sagittal section
question
simple epithelium
answer
single layer
question
these orientations don't change
answer
absolute orientations
question
glandular (e.g. salivary, sweat, mucous) has a _________ function
answer
secretory
question
cartilage is part of what system?
answer
skeletal
question
(arthro)
answer
joints
question
prefix for "within"
answer
intra-
question
a horizontal section that divides the body into an upper and lower part
answer
transverse section
question
this cartilage is milky-white
answer
hyoid cartilage
question
what are the vital functions of the inner ear system?
answer
balance and hearing
question
the respiratory system provides the ________ for speech
answer
power
question
joints that allow moderate flexion between bones (vertebrae of the spinal column)
answer
amphiarthroidial
question
what are the different types of joints?
answer
syntarthroidial, amphiarthroidial, and diarthroidial
question
supports epithelial cells and joins epithelium to connective tissues
answer
basilar membrane
question
connects muscles to other muscles, muscles to bones, and muscles to cartilages
answer
tendons
question
away from the center
answer
distal
question
this cartilage is yellowish
answer
elastic cartilage
question
what are the elementary tissues?
answer
epithelium, connective, muscle, nervous, vascular
question
toward the front, away from the back
answer
anterior
question
what are the vital functions of the articulatory system?
answer
alimentation (nourishment) and taste
question
prefix for "below"
answer
sub-
question
what systems are part of speech production?
answer
articulatory system, laryngeal system, and respiratory system
question
this joint allos the brain and skull to expand in newborns
answer
syntarthroidial
question
sheets of cells resting on a callogen-based membranous surface (cells may be flat, cube-shaped, cylindrical, pear-shaped, ciliated)
answer
epithelial tissue
question
the inner ear developed an _______ that is finely tuned to the sound of the human voice
answer
auditory mechanism
question
what are the different vascular tissues?
answer
blood and lymph
question
a longitudinal vertical slice that divides the body into a front and back part
answer
coronal (frontal) section
question
brings nutrients to the cells of the body
answer
blood
question
compound epithelium
answer
multiple layers
question
the intercellular matrix of bones is largely composed of _______
answer
inorganic salts
question
toward the back; away from the front
answer
posterior
question
prefix for "under, beneath, deficient"
answer
hypo-
question
what are the vital functions of the laryngeal system?
answer
protection of trachea during swallowing and assistance for heavy lifting and pushing
question
this type of joint is moveable or synovial
answer
diarthroidial
question
toward the surface
answer
superficial
question
what composes the cell structure?
answer
DNA, mitochondria, chromosomes, nucleus
question
below
answer
inferior
question
toward the backbone
answer
dorsal
question
these orientations depend on how you are facing
answer
relative orientations
question
connections between bones and bones, cartilages and cartilages, and bones and cartilages
answer
joints
question
what are all the anatomical planes?
answer
coronal (frontal), sagittal, and transverse
question
the articulatory system provides the _______ for speech
answer
filter
question
what are the characteristics of living things?
answer
metabolism, reproduction, mobility, irritability, growth
question
situated on the lower or abdominal surface
answer
ventral
question
near the midline
answer
medial
question
bind and support various structures in the body, mostly intercellular matrix of various kinds (fibers, minerals, collagen, fat) within which are the cells
answer
connective tissue
question
above
answer
superior
question
lying on the front
answer
prone
question
what are the different types of cartilages?
answer
hyoid, elastic, and fibro-cartilage
question
lying on the back
answer
supine
question
main portion of skeletal system
answer
bone
question
groups of cells that have a common function
answer
tissues
question
joints that allow movement between bones or cartilages (e.g. elbow, laryngeal cartilages; can bend almost 180 degrees)
answer
diarthroidial
question
prefix for "above/excessive"
answer
hyper-
question
lymphocytes; defense against disease
answer
lymph
question
joints between bones of cranium (brain case)
answer
syntarthroidial
question
prefix for "opposite side"
answer
contra-
question
_______ basic types of tissue with subordinate groups within each type
answer
5
question
this cartilage has collagen fibers in its intercellular matrix and may "ossify" or harden over time
answer
hyalin cartilage
question
type of joint that is flexible
answer
amphiarthroidial
question
this connective tissue is strong and rigid
answer
bone
question
a muscle that attaches to itself
answer
aponeurosis (tendon)
question
lining of body cavities has _______ (e.g. stomach) and _______ (e.g. mouth, trachea) functions
answer
absorptive, protective
question
toward the tail; away from the head
answer
caudal
question
type of joint that is fibrous or immoveable
answer
syntarthroidial
question
what are the vital functions of the respiratory system?
answer
exchange of oxygen and carbon dioxide, thermoregulation, and aid to olfaction
question
this cartilage has elastic fibers and forms the pinna, nose, and epiglottis
answer
elastic cartilage
question
this connective tissue withstands great pressure, but tears easily
answer
cartilage
question
prefix for "around"
answer
peri-
question
elastic, flexible fibers
answer
ligaments
question
connect bone to bone, cartilage to cartilage, and bone to cartilage
answer
ligaments
question
skin has a _______ function
answer
protective
question
prefix for "away from"
answer
ab-
question
surfaces between the vertebrae and sufaces of the temporo-mandibular joint (separates vertebrae and back)
answer
fibro-cartilage
question
prefix for "on the same side"
answer
ipsi-
question
prefix for "between"
answer
inter-
question
"chondro"
answer
cartilage
question
prefix for "together/towards"
answer
ad-
question
the laryngeal system provides the _______ for speech
answer
sound
question
away from the surface, toward the center
answer
deep
question
prefix for "through"
answer
trans-
question
the more fixed end of the muscle
answer
origin
question
low muscle tone
answer
hypotonia
question
area where trachea divides into bronchi
answer
carina
question
all ribs are attached to the _______
answer
vertebrae
question
neurons respond to external stimuli and send bioelectrical signals to the brina through a chain of _______ neurons
answer
afferent
question
collections of tissues that work together in functional unity
answer
organs
question
the spot on the neuron where the electrical signal jumps
answer
nodes of ranvier
question
collections of organs or tissue aggregates that work together in functional unity
answer
systems
question
what are the two types of pleura?
answer
visceral and parietal
question
name the naming conventions
answer
naming by origin and insertion, naming by function, naming by location
question
which lung is more susceptible to inhaling objects that are not supposed to be there?
answer
right
question
neurons carry bioelectrical signals from the brain to other parts of the body through a chain of _______ neurons
answer
efferent
question
the direction in which the muscle lies
answer
course
question
muscle attachments
answer
origin, insertion, course
question
colar bone = _______ scapula = _______
answer
clavicle shoulder blade
question
a coated surface that keeps the signal on a neuron going in the correct direction
answer
myelin
question
the base of the neuron that takes in the signal
answer
dendrites
question
which long goes more straight down?
answer
right
question
the end of the muscle that moves the most
answer
insertion
question
going towards the brain
answer
afferent
question
-itis = ________
answer
inflammation
question
the cells comprising the brain, spinal cord, and peripheral nerves
answer
neurons
question
area where the synaptic transition takes place on a neuron. it attaches to more dendrites and the process occurs all over again
answer
axon terminal
question
the amount of contraction present even when a muscle is not being actively used
answer
tone
question
area in the left lung where the heart is
answer
cardiac impression
question
deoxygenated blood = _______ oxygenated blood = _______
answer
blue red
question
going towards the periphery
answer
efferent
question
tissues that provide movement in the body
answer
muscles
question
what does the upper airway consist of?
answer
oral cavity, nasal cavity, larynx, pharynx, epiglottis, vocal cords
question
air is forced out of the lungs as the thoracic cavity contracts
answer
exhalation (expiration)
question
muscles we control to effect movement, e.g. running, chewing, articulating speech, appear stripped
answer
striated muscles
question
_______ pleura covers the lungs
answer
visceral
question
air is drawn into the lungs as the thoracic cavity expands
answer
inhalation (inspiration)
question
where the actual exchange of gas takes place
answer
alveolar ducts, alveolar sacs, alveoli
question
_______ pleura lines the inside of the ribcage
answer
parietal
question
what do the two pleuras produce?
answer
serum
question
what are the components of the skeletal structure of the ribs?
answer
rib cage, sternum, thoracic spine, pectoral girdle: clavicle and scapula
question
what makes up the sternum?
answer
manubrium, sternum, xiphoid process
question
how many ribs are there altogether?
answer
12
question
ribs serve as a _______ function
answer
protective
question
these muscles are involuntary or visceral and form a milking action
answer
smooth
question
how many sections does the right lung have? left?
answer
3, 2
question
this type of muscle is voluntary, somatic, or skeletal
answer
striated
question
what are the prefixes for "muscle"
answer
myo, mylo, sarco
question
as bronchi continues to bifurcate, it stopes becoming cartilage and becomes more _______
answer
membranous
question
this muscle forms many of the internal organs over which we do not have voluntary control, e.g. esophagus, intestines, muscles within the blood vessels; appear unstriped
answer
smooth
question
area between the lungs
answer
mediastinum
question
the trachea is in _______ of the esophagus
answer
front
question
these muscles have characteristics of striated and smooth muscles; forms the heart
answer
cardiac muscles
question
what are the different muscle cell types?
answer
striated, smooth, cardiac
question
these ribs attach only to the vertebrae
answer
floating ribs
question
pertaining to ribs
answer
costal
question
muscles of inspiration pull the ribs _______
answer
up
question
the force per unit applied to an object in a direction perpendicular to the surface
answer
pressure
question
what are the units of pressure?
answer
pascals (Pa), pounds per square in (PSI), manometric units (cm or in of H2O)
question
these ribs attach to the vertebrae and the rib above it
answer
false ribs
question
muscles of exhalation pull the ribs ______
answer
down
question
when breathing in, chest _______, ribs _______, diaphragm _______
answer
expands move up contracts, comes down
question
the process by which the body takes in oxygen and eliminates carbon dioxide
answer
respiration
question
what are all of the intercostal muscles?
answer
external and internal interchondral interosseous
question
what are the external intercostals? are they used for inhalation or expiration?
answer
interosseous = inhalation
question
what are the internal intercostals? are they used for inhalation or exhalation?
answer
interchondral = inhalation interosseous = exhalation
question
which intercostal muscles are muscles of expiration?
answer
interosseous internal intercostal muscles
question
of the intercostal muscles, which are the muscles of inspiration?
answer
external intercostal muscles and interchondral internal intercostal muscles
question
spirometer measures the _______
answer
volume
question
manometer measures the _______
answer
pressure
question
magnetometer measures the _______
answer
displacement of the chest and abdominal walls
question
the abdominal muscles are only used during exhalation or inhalation?
answer
exhalation
question
what are the muscles of respiration?
answer
intercostals, abdominals, diaphragm, and supporting muscles
question
the quantity of air that can be contained in a vessel or space
answer
volume
question
what is volume measured in?
answer
liters (l), milliliters (ml), cubic centimeters (cc)
question
pressure within the alveoli
answer
alveolar pressure
question
the part of the skeletal system that protects the viscera of the thorax includes the...
answer
sternum, ribs, clavicle, scapula, thoracic vertebrae
question
how many floating ribs are there?
answer
2
question
middle of tidal breathing
answer
equilibrium
question
how many thoracic vertebrae are there?
answer
12
question
any muscles that depress the ribs and reduce the inside dimensions of the thorax promote _______
answer
expiration/exhalation
question
discrete amounts of air in the lungs as a result of specific respiratory actions
answer
volumes
question
the part of the air passageway existing within the respiratory system includes the...
answer
trachea, bronchi, bronchioles, air sacs, alveoli
question
neumotachygraph measures the _______
answer
rate of airflow
question
plethysmograph measures the _______
answer
capacity
question
how many false ribs are there?
answer
3
question
pressure inside the mouth
answer
intra-oral pressure
question
start as cartilage, then ossify and fuse together as you get older; makes up the sternum
answer
manubrium, sternum, xiphoid process
question
any muscles that help enlarge the rib cage promote _______
answer
inspiration/inhalation
question
pressure below the glottis/vocal folds; need pressure build up to phonate
answer
subglottal pressure
question
what is the most important muscle of inhalation?
answer
diaphragm
question
the volume of air that moves through a given area in a unit of time
answer
air flow
question
what units is air flow measured in?
answer
liters per sec (l/s), milliliters per sec (ml/s), milliliters per min (ml/m)
question
the volume of air that can be forced out of the lungs with maximal effort after the expiration phase of tidal breathing
answer
expiratory reserve volume (ERV)
question
the volume of air exchanged during a given task
answer
tidal volume (TV)
question
the volume of air that can be inspired with maximal effort after the inspiration phase of tidal breathing
answer
inspiratory reserve volume (IRV)
question
how many true ribs are there?
answer
7
question
what sticks to the lungs and rib cages?
answer
pleura
question
when breathing out, chest _______, ribs _______, and diaphragm _______
answer
contracts, move down, relaxes (comes up)
question
measuring stick by which we measure all the other pressures
answer
atmospheric pressure
question
a passive process that uses relaxation of the muscles of inhalation to force the air out of the lungs
answer
exhalation/expiration
question
these ribs attach to the sternum and the vertebrae
answer
true ribs
question
the volume of air that remains in the lungs after a maximal expiration
answer
residual volume (RV)
question
inhalation is primarily an active muscular process that depends on the participation of the _______ and on increasing the internal dimensions of the _______ to permit air to enter the lungs
answer
pleura, thoracic cavity
question
separates the thoracic cavity from the abdominal cavity
answer
diaphragm
question
inspiratory muscles contract with greater effort to _______ more and relax to _______
answer
inhale, exhale
question
a narrow device equipped with a light and a small camera that can be inserted down the throat to take pictures of laryngeal function
answer
endoscope
question
an endoscope with a stroboscopic light source that permits the viewer to observe phonation in what appears to be slow motion
answer
stroboscope
question
a procedure in which a light sensor placed on the neck near the level of the glottis measures a light source that shines through the glottis during abduction and phonation
answer
translumination
question
speakers can produce a larger dynamic range of intensity at the _______
answer
mid-range of pitch
question
speakers can vary intensity by as much as _______
answer
70 dB
question
the sound intensity level of the voice will increase by about _______ when subglottal pressure is _______
answer
8 to 12 dB; doubled
question
to lower pitch below habitual pitch, the _______ must contract
answer
vocalis
question
anchor the arytenoid cartilages during cricothyroid action to achieve high pitch
answer
posterior cricoarytenoids (PCAs)
question
mass per unit length must be decreased by a factor of _______ in order to _______ the frequency vibration -- _______ action
answer
4, double, cricothyroid
question
thicker, more flaccid folds vibrate more _______; thinner more tense folds vibrate _______
answer
slowly, quickly
question
the activity of the muscles that control adduction also help contribute to the amount of tension in the vocal folds
answer
medial compression
question
which muscles adduct the vocal folds and also help squeeze them together?
answer
lateral cricoarytenoids (transverse and oblique), muscularis
question
the muscles that control the stretching and tensing forces applied to the vocal folds that change the pitch of the voice
answer
longitudinal tension
question
which muscles make the vocal folds longer, more tense overall, and less massive per unit of length?
answer
cricothyroids
question
which muscles make the vocal folds more tense internally, more flaccid at the vibrating edge, shorter and more massive per unit of length?
answer
vocalis
question
what occurs during the attack phase?
answer
vocal folds adducted controlled exhalation subglottal pressure begins to deform the vocal folds from below when subglottal pressure finally forces vocal folds apart a burst of compressed air is released quickly Bernoulli effect comes into play to suck the folds back together elastic recoil forces operate to return vocal folds to a non-deformed position
question
what occurs during the pre-phonation phase?
answer
vocal folds become adducted controlled exhalation is occurring (checking action) subglottal pressure builds up below the adducted vocal folds
question
producing voicing by allowing the adducted vocal folds to vibrate
answer
attack phase
question
the period during which the vocal folds undergo regular cycles of aerodynamic and myoelastic vibration
answer
attack phase
question
describe Bernoulli effect
answer
increased air flow = increased KE = decreased air pressure
question
the period during which the vocal folds move from an abducted position to an adducted position
answer
pre-phonation phase
question
getting ready to produce voicing by adducting the vocal folds
answer
pre-phonation
question
allowing airflow and subglottal pressure to blow the adducted vocal folds apart and allowing elastic recoil forces and the Bernoulli effect to bring them back together
answer
the open/close cycle of vocal fold vibration
question
opening and closing the adducted vocal folds by aerodynamic and myoelastic forces
answer
vocal fold vibration
question
opening and closing the glottis by active muscular force
answer
abduction and adduction
question
on the vocal fold, which layer is cotton, thread-like?
answer
deep layer
question
on the vocal folds, which layer is like a rubber band?
answer
intermediate layer
question
on the vocal folds, which layer is gelatinous?
answer
superficial layer
question
which layers of the vocal folds compose the lamina propia?
answer
superficial, intermediate, and deep layers
question
the average female thyroid cartilage has a _______, which causes a _______ between the adducted vocal folds and leads to _______ during normal phonation.
answer
broader thyroid angle, posterior glottal gap, breathiness
question
also known as strap muscles
answer
infrahyoid muscles
question
_______ muscles control the shape of the glottis and vibration behaviors of the vocal folds
answer
intrinsic
question
_______ muscles support and control the position of the larynx (elevate or depress it)
answer
extrinsic
question
which layers compose the vocal ligament?
answer
deep and intermediate layers
question
on the vocal fold, which layer does mucous production come from?
answer
epithelium
question
what are the infrahyoid muscles?
answer
thyrohyoid, sternohyoid, sternothryoid, omohyoid
question
what are the suprahyoid muscles?
answer
anterior and posterior bellies of the digastric, stylohyoid, mylohyoid, geniohyoid
question
suprahyoid muscles _______ the larynx
answer
elevate
question
infrahyoid muscles _______ the larynx
answer
lower
question
what are the only abductors in the larynx?
answer
posterior cricoarytenoid (PCA) mucles
question
what is the action of the internal thyrovocalis, thryovocalis, or vocalis muscles?
answer
regulate contraction of the vocal folds; tensor of folds
question
what is the action of the external thyroarytenoid, thyromuscularis, or muscularis muscles?
answer
pull arytenoids forward and rotate them
question
what are all of the intrinsic laryngeal muscles?
answer
vocalis (or thyrovocalis, or internal or medial thryoarytenoid) external or lateral thyroarytenoid (muscularis or thryomyscylaris) cricothyroid posterior cricoarytenoid lateral cricoarytenoid transverse arytenoid oblique arytenoid
question
are intrinsic laryngeal muscles in pairs?
answer
yes
question
what is the action of the transverse arytenoid muscles?
answer
approximate arytenoids, adductors
question
what is the action of the lateral cricoarytenoid (LCA) muscles?
answer
close and tense the vocal folds; adductors (major antagonist of PCA); add medial compression to vocal folds
question
what is the action of the posterior cricoarytenoid (PCA) muscles?
answer
open and tense the vocal folds; abduction
question
what is the action of the cricothyroid muscles?
answer
pull thyroid forward and elevate arch of cricoid; regulates vocal pitch by tensing and lengthening vocal folds
question
what is the action of the oblique arytenoid muscles?
answer
draw apices together; adductors
question
the vocal ligaments course between the inside of the _______ and the _______ processes of the _______ cartilages
answer
thyroid angle, vocalic, arytenoid
question
muscles connecting parts of the larynx to each other
answer
intrinsic muscles
question
muscles connecting the larynx to structures outside the larynx
answer
extrinsic muscles
question
the suprahyoid set and the infrahyoid set are part of which muscles?
answer
extrinsic muscles
question
intrinsic laryngeal muscles affect vocal fold _______
answer
tension
question
attaches hyoid bone to thyroid
answer
lateral hyothyroid ligament
question
which cartilage floats in the soft tissue of the thyroid?
answer
cuneiforms
question
which laryngeal cartilage rotates?
answer
arytenoids
question
runs across the airway
answer
vocal ligaments
question
what is the apex attached to?
answer
arytenoids
question
what are the different components of the thyroid?
answer
upper cornua, thyroid lamina, thyroid notch, lower cornua
question
which laryngeal cartilage rocks backward and forwards?
answer
thyroid
question
which cartilage sits right about the cricoid?
answer
thyroid
question
when we swallow, the epiglottis folds over the _______ cartilage
answer
thyroid
question
which process attaches to 3 muscles?
answer
muscular process
question
which process attaches to the vocal ligaments?
answer
vocalic process
question
the vocalic process and the muscular process are both attached to which cartilage?
answer
arytenoids
question
which laryngeal cartilage sits on top of the cricoid towards the back?
answer
arytenoids
question
how many facets does the cricoid have and to what other cartilages are they to?
answer
4; 2=thyroid; 2=arytenoids
question
what are the laryngeal cartilages?
answer
cricoid, thyroid, arytenoids, epiglottis, corniculates, cuneiforms
question
what is the only bone in the larynx?
answer
hyoid
question
what cartilage is the lowest or the base in the larynx?
answer
cricoid
question
what is the larynx composed of?
answer
laryngeal cartilages, hyoid bone, laryngeal ligaments and membranes
question
we control air flow using the checking action both to increase or decrease the _______ and to provide subglottal air pressure control for _______
answer
loudness of sound; pitch
question
air flows from regions of _______ pressure to regions of _______ pressure
answer
high; low
question
when atmospheric pressure is higher than alveolar pressure, we _______; when alveolar pressure is higher than atmospheric pressure, we _______
answer
inhale, exhale
question
during speech production, inhalation is shorter than exhalation because we use _______ to control the rate of expiratory airflow
answer
an active checking action
question
the phonatory system is also known as _______
answer
laryngeal or voicing system
question
the volume of air the lungs can hold at the heigh of a maximum inspiration
answer
IRV + TV + ERV + RV = total capacity (TC)
question
_______ forces result from contractions of the muscles of respiration, primarily the diaphragm, the intercostal muscles, and the abdominal muscles
answer
active
question
_______ forces re the forces generated by the elastic recoil properties of the flexible tissue, including the muscles, ligaments, pleura, and lung tissue as they try to return from an extreme state to their resting state
answer
passive
question
to maintain a controlled rate of airflow for proper subglottal pressure during speech, we use a _______ to retard the rapid elastic recoil (passive relaxation force) of the inspiratory muscles during expiration
answer
checking action
question
abdominal muscles are active during checking action; in other words, they are function actively during _______ breathing
answer
speech
question
the volume of air left in the lungs after the expiratory phase of tidal breathing
answer
ERV + RV = functional residual capacity (FRC)
question
expiratory muscles must contract to _______ more and relax to _______
answer
exhale, inhale
question
combinations of various volumes
answer
capacities
question
the maximal inspiration that can be taken following a maximal expiration
answer
IRV + TV + ERV = vital capacity (VC)
question
the volume of air that can be inhaled after the end of the expiratory phase of tidal breathing
answer
IRV + TV = inspiratory capacity (IC)
question
which type of tissue has many kinds of inter-cellular matrix?
answer
connective tissue
question
which kind of tissue may have cilia?
answer
epithelial tissue
question
the joints between the various skeletal structures of the larynx are _______ joints because they allow the structures to articulate substantially
answer
diarthroidial or moveable or synovial
question
the parts of the sternum are...
answer
manubrium, corpus, xiphoid process
question
what type of muscle does the trachea contain?
answer
smooth or visceral or involuntary
question
which bones constitute the pectoral girdle (or shoulder complex)?
answer
clavicles and scapulae
question
what is the purpose of the visceral and parietal pleura?
answer
to lubricate and maintain contact between the pleura
question
intercostal muscles are muscles that course between adjacent pairs of _______
answer
ribs
question
interosseous intercostal muscles re muscle that course between the _______ portion of the ribs
answer
bony
question
interchondral interosseous muscles are muscles that course between the _______ portion of the ribs
answer
cartilagenous
question
interosseous internal intercostal muscles are active during ______
answer
exhalation
question
interosseous external intercostal muscles are active during _______
answer
inhalation
question
interchondral internal intercostal muscles are active during _______
answer
inhalation
question
there are no interchondral external intercostal muscles. true or false?
answer
true
question
the diaphragm muscles originate __________ and insert ________
answer
at the peripheral of the base of the ribcage; in their own central tendon (or aponeurosis)
question
when the diaphragm contracts, it becomes __________
answer
tense and flatter
question
which structures insure that as the chest cavity enlarges, the lungs are expanded?
answer
visceral and parietal pleurae