Science, asked by prkreddy30, 5 months ago

1. What will happen if there are no platelets in the blood? 2M
2. Wly blood is needed by all the parts of a body? 3M
3. Describe the function of heart with the labeled diagram. 5M​

Answers

Answered by Loveleen68
1

Answer:

1. The blood clots due to the presence of platelets. If there are no platelets in the blood, then after a minute injury or cut, the blood will not clot and continue to flow outside the body and the person might die.

2. Blood is needed by all the parts of the body because: (i)It carries oxygen to all the parts of the body and also carries carbon dioxide back to the lungs. (ii) It carries digested food to various parts of the body for absorption. (iii) It contains platelets which help in the clotting of blood.

3. The heart has four chambers:

The right atrium receives blood from the veins and pumps it to the right ventricle.

The right ventricle receives blood from the right atrium and pumps it to the lungs, where it is loaded with oxygen.

The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle.

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