Parts of the Heart and Their functions

PARTS OF THE HEART AND THEIR FUNCTIONS


AORTA

- The body's largest artery. - Takes oxygenated blood from the left ventricle to the body.


SUPERIOR VENA CAVA

bringing de-oxygenated blood from the body to the heart. Veins from the head and upper body feed into the superior vena cava, which empties into the right atrium of the heart.

The superior vena cava is one of the two main veins


INFERIOR VENA CAVA

- The inferior vena cava is a large vein that carries de-oxygenated blood from the lower body to the heart.


PULMONARY ARTERY

- carries deoxygenated blood from the right ventricle to the lungs.


PULMONARY VEIN

- Takes oxygenated blood from the lungs to the left atrium


LEFT ATRIUM

- Oxygen-rich blood from the lungs enters the left atrium through the pulmonary vein.


RIGHT ATRIUM

- Receives deoxygenated blood from the body


LEFT VENTRICLE

- Receives oxygenated blood from the left atrium via the mitral valve and pumps it through the aorta


RIGHT VENTRICLE

- The chamber within the heart that is responsible for pumping oxygen-depleted blood to the lungs


TRICUSPID VALVE

- The function of the tricuspid valve, or right atrioventricular valve, is to prevent back flow of blood into the right atrium.


BICUSPID VALVE

- The bicuspid valve, or mitral valve, permits blood to flow one way only, from the left atrium into the left ventricle.


PULMONARY VALVE

- This valve is opened by the increased blood pressure of the ventricular systole (contraction of the muscular tissue), pushing blood out of the heart and into the artery. It closes when the pressure drops inside the heart.


AORTIC VALVE

- The aortic valve functions to prevent the regurgitation of blood from the aorta into the left ventricle during ventricular diastole and to allow the appropriate flow of blood—the cardiac output —from the left ventricle into the aorta during ventricular systole.


HOW WILL YOU TAKE CARE OF

YOUR HEART?


1. It is hallow muscular organ.a. heart b. blood c. vein

2. Thin-walled upper chambers. a. ventricles b. atrium c. aorta 3. Thick-walled lower chambers. a. atrium b. ventricles c. artery


4. They control the blood flow inside the heart.

a. artery b. ventriclesc. valves

5. It is called the alternating relaxations and contractions of the heart?a. cardiac cycle b. aorta

c. ventricles


ASSIGNMENT:Memorize the parts of the heart and the blood flow process.

Education

Parts of the Heart and Their functions