Heart Structure and Function
The heart, a
muscular organ roughly the size of a clenched fist, serves as the central pump
of the circulatory system in most animals, including humans.
Watch Our Video Here : Heart Structure, Function and Blood Circulation in 7 minutes
|
Structure |
Function |
|
Left Ventricle |
The
left ventricle is one of the four chambers of the heart, responsible for
pumping oxygenated blood to the body through the aorta. It has thick muscular
walls to generate high pressure. |
|
Mitral Valve |
The
mitral valve is located between the left atrium and left ventricle,
preventing backflow of blood into the atrium during ventricular contraction.
It consists of two leaflets. |
|
Right Ventricle |
The
right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery
for oxygenation. It has thinner walls compared to the left ventricle due to
lower pressure requirements. |
|
Tricuspid Valve |
The
tricuspid valve is situated between the right atrium and right ventricle,
preventing backflow of blood into the atrium during ventricular contraction.
It has three leaflets. |
|
Aorta |
The
aorta is the largest artery in the body, carrying oxygen-rich blood from the
left ventricle to all parts of the body through systemic circulation. |
|
Right Atrium |
The
right atrium receives deoxygenated blood from the body via the superior and
inferior vena cavae and pumps it into the right ventricle. |
|
Superior Vena Cava |
The
superior vena cava is a large vein that carries deoxygenated blood from the
upper body (head, neck, arms) to the right atrium of the heart. |
|
Left Atrium |
The
left atrium receives oxygenated blood from the lungs through the pulmonary
veins and pumps it into the left ventricle for distribution to the body. |
|
Inferior Vena Cava |
The
inferior vena cava is a large vein that carries deoxygenated blood from the
lower body (legs, abdomen) to the right atrium of the heart. |
|
Pulmonary Artery |
The
pulmonary artery carries deoxygenated blood from the right ventricle to the
lungs for oxygenation; it splits into left and right branches leading to each
lung. |
|
Pulmonary Vein |
The
pulmonary veins carry oxygenated blood from the lungs back to the left atrium
of the heart, completing the circuit of pulmonary circulation. |
|
Pulmonary Valve |
Between
the right ventricle and pulmonary artery; Opens to allow blood to be pumped
from the right ventricle to the lungs for oxygenation; prevents backflow into
the ventricle. |
|
Aortic Valve
|
The
aortic valve is situated between the left ventricle and the aorta.
responsible for regulating blood flow from the heart into the aorta during
contraction and preventing backflow during relaxation. |