Heart Structure 2025/2026
QUESTIONAND ANSWERS 100%
VERIFIED CORRECT
Left Atrium
What's the name of the labeled chambers
Right Atrium
What's the name of the labeled chambers
Left Ventricle
What's the name of the labeled chambers
Right Ventricle
What's the name of the labeled chambers
right atrium
one of the upper chambers of the heart; receives de-oxygenated blood from the body
right ventricle
one of the lower chambers of the heart; it pumps blood to the lungs and is part of the
pulmonary circuit
left atrium
one of the upper chambers of the heart; it receives blood returning from the lungs and is
part of the pulmonary circuit
left ventricle
one of the lower chambers of the heart; pumps blood to the furthest parts of the body;
part of the systemic circuit.
Produces strongest contractions as has thickest wall; pushes blood to all parts of the
body; beginning of the systemic circuit
cardiac septum
a separating wall or partition between the left and right sides of the heart
pulmonary semilunar valve
located between the right ventricle and the pulmonary artery.
aortic semilunar valve
located between the left ventricle and the aorta
Right Atrioventricular Valve
Prevents back-flow of blood into right atrium during ventricular systole; also called the
tricuspid valve
Cardiac Cycle
A complete heartbeat consisting of contraction and relaxation of both atria and both
ventricles
Systole
contraction phase of the heartbeat
Diastole
relaxation phase of the heartbeat
SA node
pacemaker of the heart
