CBSE Class 10 Answered
I am not able to understand the circulation of blood through the human heart.Please explain it.
Asked by ndoria2000 | 07 Sep, 2015, 06:09: PM
Expert Answer
Hi Muskan,
- There is double circulation of blood in the human heart.
- Double circulation means blood passes through the heart twice.
- This is possible in the heart because of its division into the right and the left halves by an atrioventricular septum.
- The right half of the heart deals with deoxygenated blood and the left heart deals with oxygenated blood.
- Hence, blood in the body circulates in two ways.
- Pulmonary Circulation
- Systemic Circulation
- Pulmonary Circulation
- Blood in the right ventricle is pumped into the pulmonary arteries.
- The pulmonary arteries carry the deoxygenated blood to lungs for oxygenation.
- Oxygenated blood from the lungs is sent to the left atrium via pulmonary veins.
- This circulation of blood via pulmonary blood vessels is called pulmonary circulation.
- Systemic Circulation
- It pertains to the major circulation of the body.
- Oxygenated blood from the left ventricle is pumped into the aorta.
- It is further carried by the arteries, the arterioles and the network of blood capillaries.
- On the other side, deoxygenated blood is collected in the right atrium through the superior and inferior vena cavae.
- Systemic circulation provides oxygen and nutrients and carries away carbon dioxide and other harmful substances for elimination.
Answered by | 07 Sep, 2015, 06:23: PM
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