Heart

During ventricle systole:

SL valves are open/mostly open.

S2 sound - DUPP

SL valves closing

Identify the correct sequence for blood flow through the heart.

SVC > right atrium > right ventricle > pulmonary trunk > R/L pulmonary arteries > lungs

QRS

Ventricular depolarization

The SA node, part of your heart's conduction system, causes:

atria to depolarize

The amount of blood pumped by the ventricles per contraction is:

stroke volume

t-wave

ventricular repolarization

Which of the following vessels brings oxygenated blood to the left atrium?

Right and left pulmonary veins

regarding cardiac output (CO) and its formula:

The formula for cardiac output can be written as: CO = SV x HR. SV is the amount of blood pumped by the ventricles per contraction.

during atrial systole the SL valves are primarily closed

true

during ventricular systole the AV valves are primarily closed.

true

stroke volume is regulated primarily by the amount of blood in ventricles and secondly, by the force of contraction.

true

the 1st branch of the aorta - not the arch- are the R & L coronary arteries

true

the 1st branch of the arch of the aorta is the brachiocephalic trunk - BCT

true

the bicuspid valve is found between the left atrium and the left ventricle

true

the heart relaxes for the same amount of time that it contracts

true

the t-wave represents the onset of ventricular repolarization

true

The right atrium recieves deoxygenated (deO2) blood from the:

superior and inferior vena cavas and the coronary sinus

S1 sound - LUBB

AV valves closing

P-wave

atrial deplolarization

regarding the heart:

deox blood flows into the right atrium. 3rd branch of the arch of the aorta is the left subclavian artery. the IVC brings deox blood to the heart from the lower extremities. The pulmonary truck bifurcates into the right and left pulmonary arteries.

Papillary muscles are the primary pumping layer of the heart

false

all 4 valves in the heart cannot be closed at the same time under any circumstances.

false

chordae tendineae are found in all heart valves

false

the heart relies on anaerobic respiration

false

Which of the following vessels returns oxygenated blood to the right atrium?

oxygenated blood does not return to the right atrium

During which phase of the cardiac cycle would the blood move mostly due to gravity?

relaxation