Structure and Function of the Human Heart

Ligamentum Arteriosum (Ductus Arteriosus)

A blood passage in fetuses that is between the pulmonary trunk and the aorta.

Fossa Ovalis (Foramen Ovale)

A blood passage opening in fetuses where most blood enters directly into the left atrium.

Superior Vena Cava

A large vein carrying blood from anterior body to the right atrium of the heart.

Inferior Vena Cava

A large vein carrying blood from posterior body the right atrium of the heart.

Pericardium

A membranous sac that incases and protects the heart.

Pulmonary Valve

A semilunar valve that prevents the back flow of blood from arteries into ventricles.

Aortic Valve

A semilunar valve that separates the ventricles major arteries.

Tricuspid Valve

An atrioventricular valve that allows blood flow only from the atrium into the ventricle.

Bicuspid Valve

An atrioventricular valve that makes sure blood flows in one direction.

Left Pulmonary Vein

Carries oxygenated blood from lungs to the left atrium of the heart.

Right Pulmonary Veins

Carries oxygenated blood from lungs to the right atrium of the heart.

Chord Tendineae

Keeps the atrioventricular valves fro being pushed too far back by blood during contraction

Left Ventricle

Poems oxygenated blood to all of the tissues all over the body.

Left Atrium

Pumps oxygen-rich blood straight to left ventricle.

Pulmonary Trunk

Takes blood from the heart to the lungs.

Right Atrium

Takes deoxygenated blood from the body through the vena cava and pumps blood into right ventricle.

Aorta

The largest artery carrying blood to brachiocephalic trunk, left subclavian artery and dorsal aorta.

Right Pulmonary Arteries

Transports deoxygenated blood from right ventricle to the right lung.

Left Pulmonary Arteries

Transports deoxygenated blood from the left ventricle to the left lung.