GMS6530: THE CARDIOVASCULAR SYSTEM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
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Module
GMS6530
Institution
GMS6530
GMS6530: THE CARDIOVASCULAR SYSTEM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
What are the 3 layers of the heart?
epicardium (outer), myocardium (thickest), endocardium (inner)
pericardium
membrane surrounding the heart
atria
upper chambers of the heart
ventric...
prevent back flow of blood; they are one way valves
what are the valves in the heart composed of?
dense connective tissue covered by endocardium; they open/close due to pressure
changes when heart contracts and relaxes
atrioventricular (AV) valves
Valves located between the atrial and ventricular chambers on each side of the heart
, semilunar valves
prevent blood in the arteries from flowing back into the heart
bicuspid valve
-valve between the left atrium and the left ventricle
-mitral
tricuspid valve
valve between the right atrium and the right ventricle
T/F: blood flows through the heart from areas of higher pressure to areas of lower
pressure
True
sinoatrial (SA) node
-located in right atrial wall
-BEGINS cardiac excitation
-natural pacemaker of the heart
atrioventricular (AV) node
-located in interatrial septum
-action potential slows which provides more time for the atria to empty their blood into
the ventricles
electrocardiogram
-conduction of action potentials through the heart generates currents that can be picked
up by electrodes placed on the skin
-recording of electrical changes that accompany the heart beat
-ECG/EKG
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