Chapter 11 A&P – Flashcards
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In the limbs, which tends to be a muscle's more distal attachment?
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The insertion
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A muscle whose action opposes that of the prime mover is known as a(n):
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antagonist.
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When a person blinks she is using her:
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pitofrontalis muscle.
orbicularis oris.
procerus.
→ orbicularis oculi.
depressor labii inferioris.
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The frontal belly of the occipitofrontalis muscle causes what action?
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Sneering
Smiling
Flaring the nostrils
→ Wrinkling the brow (forehead)
Frowning
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There are four muscles of mastication. Select the exception.
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! Buccinator
Masseter
Temporalis
Lateral pterygoid
Medial pterygoid
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Contraction of the diaphragm assists in:
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expiration.
→ inspiration.
flexion at the waist.
extension at the waist.
all of these choices.
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Which muscle forms the traditional "six-pack" of a well-toned abdominal wall?
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! Rectus abdominis
Transversus abdominis
Internal oblique
External oblique
Longissimus
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For defecation to take place, the puborectalis must:
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contract.
→ relax.
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What is the diamond-shaped region between the lower appendages called?
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The periosteum
The pedundal triangle
→ The perineum
The posterior diaphragm
The coccygeal triangle
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In the male, which muscle ejects urine or semen, compresses the base of the penis, and helps in formation of an erection?
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Iliococcygeus
Superficial transverse perineal muscle
External urethral sphincter
→ Bulbospongiosus
Pubococcygeus
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Which muscles help us in the initial breakdown of food?
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Extrinsic eye muscles
→ Muscles of mastication
Muscles that move the tongue
Muscles of facial expression
Muscles of the pharynx
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Muscles of the pectoral girdle originate on the:
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clavicle and scapula and insert on the axial skeleton.
humerus and insert on the axial skeleton.
axial skeleton and insert on the humerus.
→ axial skeleton and insert on the clavicle and scapula.
humerus and insert on the clavicle and scapula.
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Which of the following muscles elevates and retracts (adducts) the scapula?
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Pectoralis minor
→ Rhomboid major
Subclavius
Serratus anterior
Scalenes
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All of these muscles, except one, adduct the arm. Select the exception.
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Infraspinatus
Teres minor
→ Supraspinatus
Coracobrachialis
Triceps brachii
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All of these muscles, except one, have their origin on the scapula. Select the exception.
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! Pectoralis major
Coracobrachialis
Triceps brachii
Subscapularis
Infraspinatus
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All of the following muscles that move the glenohumeral joint insert on the humerus, except one. Which one?
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Coracobrachialis
→ Triceps brachii
Latissimus dorsi
Pectoralis major
Supraspinatus
