Cardiovascular Study Guide – Flashcards
32 test answers
Unlock all answers in this set
Unlock answers 32question
function of ARTERIOLES
answer
vessels that take blood FROM the artery TO cappilaries
Unlock the answer
question
vasoconstriction
answer
A decrease in the diameter of blood vessels caused by contraction of smooth muscles in the vessel walls.
Unlock the answer
question
vasodilation
answer
A widening of the diameter of a blood vessel
Unlock the answer
question
function of CAPILLARIES
answer
They are microscopic vessels connecting arterioles to venules; exchange of substances between blood and tissue fluid occurs across their thin walls
Unlock the answer
question
function of VEINS
answer
vessel that takes blood TO the heart and FROM the venules; characteristically has nonelastic walls
Unlock the answer
question
function of VENULES
answer
vessels that take blood FROM capillaries TO a vein.
Unlock the answer
question
Cardiovascular system song
answer
http://www.youtube.com/watch?v=mDSFxcf2UgQ
Unlock the answer
question
pathway of blood from heart to lungs to heart
answer
1. Oxygen poor blood goes to the right atrium 2. the right atrium sends blood to the right ventricle 3. the right ventricle sends blood through the pulmonary semilunar valve to the pulmonary trunk which has the PULMONARY ARTERIES... this goes goes to the LUNGS 4. the four pulmonary VEINS then take the oxygen-rich blood to the left atrium 5. the left atrium sends blood through the atrioventricular valve to the left ventricle 6. the left ventricle then sends blood to the aortic semilunar valve into the aorta to the body proper
Unlock the answer
question
LISTEN TO THIS SONG!
answer
http://youtu.be/5tTkxYeNF9Q
Unlock the answer
question
heartbeat
answer
a. when the atria contract, the ventricles are relaxed and filling with blood. the atrioventricular valves are open and the semilunar valves are closed. b. when the ventricles contract, the atrioventricular valves are closed, the semilunar valves are open, and the blood is pumped into the pulmonary trunk and aorta. c. when the heart is relaxed, both the atria and the ventricles are filling with blood. The atrioventricular valves are opena nd the semilunar valves are closed.
Unlock the answer
question
Systolic pressure
answer
Reached during the ejection of blood from the heart
Unlock the answer
question
Diastolic pressure
answer
occurs while the heart ventricles are relaxing.
Unlock the answer
question
heart murmur
answer
An abnormal sound that most often results from blood squirting backward through a leaky valve in the heart.
Unlock the answer
question
AV node
answer
small region of neuromuscular tissue that transmits impulses received from the sinoatrial node to the ventricles
Unlock the answer
question
SA node
answer
small region of neuromuscular tissues that initiates the heartbeat (also called the pacemaker).
Unlock the answer
question
medula oblongata
answer
the part of your brain that controls heart rate
Unlock the answer
question
electrocardiogram
answer
records the electrical activity associated with the heartbeat
Unlock the answer
question
pulse
answer
vibrations felt in artery walls due to expansion of the aorta following ventricle contraction
Unlock the answer
question
cardiovascular system diagram
answer
digram
Unlock the answer
question
Major arteries & veins
answer
diagram
Unlock the answer
question
atherosclerosis
answer
an accumulation of soft masses of fatty materials including cholesterol, beneath the inner lining of arteries
Unlock the answer
question
aneurysm
answer
sac-like expansion of a blood vessel wall
Unlock the answer
question
hypertension
answer
elevated blood pressure, particularly the diastolic pressure
Unlock the answer
question
varicose veins
answer
irregular dilation of superficial veins, seen particularly in lower legs and is due to weakened valves within the veins
Unlock the answer
question
stroke
answer
condition resulting when an arteriole in the brain bursts or becomes blocked by an embolism (also called cerebrovascular accident).
Unlock the answer
question
hemorrhoids
answer
abnormally dilated blood vessels of the rectum
Unlock the answer
question
heart attack
answer
damage to the myocardium due to blocked circulation in the coronary arteries (also called a myocardial infarction or MI).
Unlock the answer
question
artificial heart
answer
artificial heart pic
Unlock the answer
