Heart Anatomy and Physiology

Front

What is the function of the SA node?

Back

The SA node, or sinoatrial node, is the natural pacemaker of the heart that initiates the electrical impulses that determine the heart rate.

Front

What is the role of the AV node?

Back

The AV node, or atrioventricular node, receives the electrical impulses from the SA node and delays them before passing them to the ventricles, allowing for proper timing of heart contractions.

Front

What is the function of Purkinje fibers?

Back

Purkinje fibers are specialized fibers that conduct electrical impulses rapidly throughout the ventricles, ensuring coordinated contraction.

Front

What is the purpose of the Bundle of His?

Back

The Bundle of His is a collection of heart muscle cells that transmits electrical impulses from the AV node to the ventricles.

Front

What is the Aorta?

Back

The Aorta is the largest artery in the body, carrying oxygenated blood from the left ventricle to the rest of the body.

Front

What is the Superior vena cava?

Back

The Superior vena cava is a large vein that carries deoxygenated blood from the upper body to the right atrium of the heart.

Front

What is the Inferior vena cava?

Back

The Inferior vena cava is a large vein that carries deoxygenated blood from the lower body to the right atrium of the heart.

Front

What is the function of the Right atrium?

Back

The Right atrium receives deoxygenated blood from the body through the superior and inferior vena cavae.

Front

What is the function of the Right ventricle?

Back

The Right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery for oxygenation.

Front

What is the function of the Left atrium?

Back

The Left atrium receives oxygenated blood from the lungs through the pulmonary veins.