Question

Question #47bd8

Answer 1

Blood is a fluid which is present all over body and is flowing in arteries and veins. It consists of RBCs, WBCs, Platelets.

Explanation:

Blood is a constantly circulating fluid providing the body with nutrition, oxygen, and waste removal. Blood is mostly liquid, with numerous cells and proteins suspended in it.

A liquid called plasma makes up about half of the content of blood.

Plasma
Plasma contains proteins that help blood to clot, transport substances through the blood, and perform other functions.
Blood plasma also contains glucose and other dissolved nutrients.

There are three types of Blood cell:-

•Red Blood cells or erythrocytes - They carry oxygen to the various different tissues of body.

• White blood cells or leukocytes- They fight infections or the microbes, foreign bodies which have entered in our body.

• Platelets or thrombocytes- They are smaller cells that help blood to clot.

Blood is conducted through blood vessels which are arteries and veins.
Blood is prevented from clotting in the blood vessels by their smoothness, and the finely tuned balance of clotting factors.

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Red Blood Corpuscles-

RBCs don't have nucleus in the cell as this helps them to carry more oxygen taking haemoglobin in them.

There work is the transportation of Haemoglobin or Oxygen to all parts of the body from lungs and then to take `CO_2` fromall the parts of the body back to lungs.

White Blood Corpuscles-

WBCs are the ones who protect us from all the infectious microbes or foreign bodies which have entered our body.
They are of Irregular shape which helps them to take out their sticky pseudopodia and capture the foreign body in just one jerk.
They capture a foreign body and then they break it into different smaller and simpler structure inside themselves.

WBCs are classified into 5 major groups :-

1. Monocytes
2. Eosinophil
3. Basophil
4. Lymphocyte
5. Neutrophil

Platelets-

These are the cells which clot the blood. Esp. when there is cut or something else and blood is flowing out then these cells only are sent by the immune system and after sometime the blood stops flowing because that place is covered by these very small blood cells.