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EXPH 386 EXAM 4 OE COMPLETE QUESTIONS AND ANSWERS (VERIFIED)
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EXPH 386 EXAM 4 OE COMPLETE QUESTIONS AND ANSWERS (VERIFIED)
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EXPH 386 EXAM 4 OE COMPLETE QUESTIONSAND ANSWERS (VERIFIED)
oxygen, fuel, nutrients
ANSWER = what does the cardiovascular system deliver to the active tissues?
deoxygenated blood
ANSWER = what does the cardiovascular system return to the lungs?
heat
ANSWER = what does the cardiovascular system transport from the body's core to the skin?
hormones
ANSWER = what does the cardiovascular system transport to the body's chemical messengers?
dual
,ANSWER = what kind of pump is the heart?
pulmonary and systemic
ANSWER = what are the two blood flow circuits?
pulmonary circulation
ANSWER = between the heart and the lungs
systemic circulation
ANSWER = between the heart and other body systems
oxygenated, body, deoxygenated
ANSWER = systemic circulation is the portion of the CV which carries _______ blood away from the
heart, to the ______, and returns ______ blood back to the heart
deoxygenated, lungs, oxygenated
ANSWER = Pulmonary circulation is the portion of the CV which carries _____ blood away from the
heart, to the _____, and returns ______ blood back to the heart
veins to atria to ventricles to arteries
,ANSWER = what is flow of blood through the heart?
heart valves
ANSWER = ensure that blood flows in the right direction through the heart
pressure
ANSWER = what differences causes valves to passively open and close?
pressure
ANSWER = what kind of gradient governs the passive filling of the ventricles?
active filling
ANSWER = atrial contraction
30%
ANSWER = at resting heart rates, what percent does the atrial contraction contribute to the filling of the
ventricle?
70%
ANSWER = what percent of venous return enters the ventricle before the atria undergoes contraction?
, lub
ANSWER = tricuspid and mitral valves snapshut and pulmonary and aortic open
dub
ANSWER = aortic and pulmonary snapshut and tricuspid and mitral valve open
isovolumetric contraction
ANSWER = for a brief period of time (0.02 to 0.06 sec), when all the heart valves remain shut,
ventricular pressure rises but volume and fiber length remain unchanged
isovolumetric relaxation
ANSWER = for a brief period of time (0.02 to 0.06 sec), when all heart valves remain shut, ventricular
pressure drops but volume and fiber length remain unchanged
arteries
ANSWER = thick walled, high pressure tubing that conducts oxygenated blood; have smooth muscle
cells and endothelial cells
arterioles
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