Heart Structure, Structure of Heart, Heart structure

Left Atrium

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

Systematic circulation

What's the name of the labeled line (going to body and back)

Pulmonary circulation

What's the name of the labeled line (going to lungs and back)

cordae tendinae

attach the mitral & tricuspid valves to the papillary muscles; act as a restraint against high ventricular pressure

papillary muscles

responsible for pulling the atrioventricular valves closed by means of the chordae tendinae

Ventricle

A heart chamber from which blood is pumped out

Vein

A blood vessel that carries blood back to the heart.

Artery

A blood vessel that carries blood away from the heart

Heart, blood vessels, and blood cells

These structures make up the cardiovascular system.

pericardium

double-walled sac that encloses the heart

epicardium

the external layer of the pericardium

myocardium

the middle and thickest of the three layers of the heart wall, consists of cardiac muscle

endocardium

(lining of the inside of the heart) forms the inner surface that comes in direct contact with blood being pumped through the heart

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

right atrium

one of the upper chambers of the heart; receives de-oxygenated blood from the body

tricuspid valve

controls the opening between the right atrium and the right ventricle

pulmonary semilunar valve

located between the right ventricle and the pulmonary artery.

mitral valve

also known as the bicuspid valve and is located between the left atrium and left ventricle

aortic semilunar valve

located between the left ventricle and the aorta

right ventricle

one of the lower chambers of the heart; it pumps blood to the lungs and is part of the pulmonary circuit

Right Atrioventricular Valve

Prevents back-flow of blood into right atrium during ventricular systole; also called the tricuspid valve

Left Atrioventricular Valve

Prevents back-flow of blood into left atrium during ventricular systole; also called the mitral valve

Aorta

Carries oxygenated blood away from the heart; largest artery in the body

Pulmonary artery

Artery that carries de-oxygenated blood to lungs from the right ventricle; part of the pulmonary circuit

Vena Cavae (superior and inferior)

Veins that empty deoxygenated blood into right atrium

Pulmonary vein

Vein that carries oxygenated blood from the lungs back to the heart in the left atrium

Cardiac septum

Divides right and left sides of the heart

Semi-lunar valves

Prevent back flow of blood into ventricles during diastole; they are the pulmonary _____________ valve and the aortic ______________valve

Capillaries

Microscopic vessel through which exchanges take place between the blood and cells of the body