The Heart structure and function

Front

What is the main function of the heart?

Back

The main function of the heart is to pump blood throughout the body, supplying oxygen and nutrients to tissues and removing carbon dioxide and waste products.

Front

What are the four main chambers of the heart?

Back

The four main chambers of the heart are the right atrium, right ventricle, left atrium, and left ventricle.

Front

What is the role 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 role of the left atrium?

Back

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

Front

What is the function of the ventricles?

Back

The ventricles are responsible for pumping blood out of the heart; the right ventricle pumps blood to the lungs, while the left ventricle pumps blood to the rest of the body.

Front

What is pulmonary circulation?

Back

Pulmonary circulation is the part of the circulatory system that carries deoxygenated blood from the right side of the heart to the lungs and returns oxygenated blood to the left side of the heart.

Front

What is systemic circulation?

Back

Systemic circulation is the part of the circulatory system that carries oxygenated blood from the left side of the heart to the rest of the body and returns deoxygenated blood to the right side of the heart.

Front

What is the function of the valves in the heart?

Back

The valves in the heart ensure unidirectional blood flow and prevent backflow of blood between the chambers.

Front

What is the SA Node?

Back

The SA Node, or sinoatrial node, is the natural pacemaker of the heart that initiates the electrical impulses for heartbeats.

Front

What is the AV Node?

Back

The AV Node, or atrioventricular node, receives impulses from the SA Node and delays them before passing them to the ventricles.