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PHYS Exam 3

Cardiovascular and Respiratory Systems

QuestioAnswer
Minimum capillary beds to pass from body to lungs to heart 3
Tubes carrying blood away from heart veins
tubes carrying blood to the heart arteries
Side of heart that receives deoxygenated blood from body and pumps to lungs Right
side of heart that receives oxygenated blood from lungs and pumps to body left
Blood is carried away from (heart chambers) and carried to (heart chambers) ventricles, artria
Exit for oxygenated blood from heart aorta
Entrance for deoxygenated blood to heart vena cava
Three layers of heart (inside to outside) Endocardium, Myocardium, Pericardium
Membrane that forms valve structures endocardium
Structures that prevent regurgitation in body valves
Cardiomyocytes are shorter or longer than normal muscle cells? shorter
Junctions between cardiomyocytes gap junctions
Cardiomyocytes in right atrium that initiate action potentials to beat the heart autorhythmic (pacemaker) cells
Ions that flow from pacemakers to initiate action potentials in surrounding cells sodium, calcium
Wave of electricity form atria depolarization P wave
wave of electricity from ventricle depolarization and atrial repolzarization QRS complex
wave of electricity from ventricle repolarization T wave
Increased permeability of cardiomyocytes to potassium and decreased permeability to calcium is an example of parasympathetic control of heartbeat (slows rate)
Increased permeability of sodium and calcium in cardiomyocytes is an example of sympathetic control of heartbeat (speeds rate)
Composition of arteries and veins (outside in) connective tissue, smooth muscle, endothelial cells
All arteries and branches have this smooth muscle
Created by: oclar11
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