Structure of the Heart
Blood Flow and Supply
Conduction System
Cardiac Cycle
Cardiac Output
100
layer of simple squamous epithelium that lines inside of myocardium
What is endocardium
100
blood vessel that delivers blood to the right atrium
What is vena cava
100
structure that picks up action potential from the SA node
What is AV node
100
closing of the AV valves produces what
What is the first heart sound (lubb)
100
cardiovascular center located here
What is medulla oblongata
200
outer portion of the pericardium
What is fibrous pericardium
200
blood supply to the myocardial wall of the heart
What is coronary arteries
200
the pacemaker of the heart
What is SA node
200
at rest each cardiac cycle lasts how many seconds
What is 0.8 seconds
200
changes in blood pressure are detected by these
What is baroreceptors
300
portion of the heart that consists of cardiac muscle tissue
What is myocardium
300
blood vessel that collects deoxygenated blood of the coronary circulation and empties into the right atrium
What is coronary sinus
300
specialized tissue capable of conduction action potentials and allowing the heart to beat without direct stimulus from the nervous system is what
What is conduction system
300
contraction of the heart muscle is referred to as what
What is systole
300
mililiters of blood pumped per minute by each ventricle
What is cardiac output
400
muscular wall of the left ventricle is thicker than the right wall because...
What is it pumps the blood to the entire body
400
valve located between right atrium and right ventricle
What is tricuspid valve
400
SA node initiates action potential how many times per minute
What is 100 times/min
400
heart sounds are produced by the what of the AV valves and the semilunar valves
What is closing
400
regulates stroke volume
What is Starling's Law, degree of stretch, force of contraction, pressure required and opening of the valves
500
blood vessel that carries blood highest in oxygen
What is pulmonary vein
500
two upper chambers of the heart are separated from each other by this
What is interatrial septum
500
correct sequence of the structures of the cardiac conduction system
What is SA node, AV node, bundle of His, Purkinje fibers
500
the remaining 25% of the blood that fills the ventricles after relaxation period occurs during this
What is atrial systole
500
phases of the cardiac cycle
What is relaxation period, ventricular filling (atrial systole) and ventricular systole
M
e
n
u