Question

State any five functions of the blood.​

Answer 1

Functions of blood :-

• It transport substances from one part of body to other part of body. For example :- Waste Matrials.

• It carries oxygen from lungs to different parts of the body.
• It carries carbon dioxide from the body cells to the lungs for breathing out.

• It carries digested food from the small intestine to all parts of the body.

• It carries hormones from the endocrine glands to different organs of the body.

• It carries waste product urea from the liver to the kidneys for excretion.

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More to know :-

Blood

• Blood is a fluid conective tissue.
• It helps is transportation of Digestive food, Waste materials, gases etc.
• Blood protects against diseases and regulates the temperature of the body.

Why blood is red ?

• Blood is red because it contains Hemoglobins which contain red pigment that gives red color to blood.

Types of blood cell :-

1. Red blood cell (RBC)
2. White blood cell (WBC)
3. Platelets
4. Plasma*

(*Note :- In Plasma all types of cells are found.)

Red blood cell (RBCs)

• RBC Carries oxygen from lungs to other part of cell and also in returning they carries Carbon dioxide.

• They have no Nucleus and contain Hemoglobin.

• The life span of RBC is 100 to 120 days.

White blood cell (WBC)

• They fight against infection and protects us from disease.

• They make antibodies against infection and provide immunity to our body.

• They are little larger than RBC.

Platelets

• They are colorless blood cell.

• Main function is clotting of blood means during injuries they help the cells to recover fast and stop the continuous flow of blood from it.

Plasma :-

• Plasma is a liquid also known as the fluid matrix and consists of three types of cells that keep floating in it namely red blood cells, white blood cells, and platelets.

• It is a colourless liquid that contains 90% water, protein, and inorganic salts.

• It carries these dissolved substances from one part to another part in the body.

• The protein in plasma includes antibodies to assist in the body’s defence system against disease and infection.

Answer 2

Answer:

1-it is responsible for gaseus exchange of O2 and CO2

2-it regulates the body temperature by distributing excess heat form inner organs

3-it makes clotting that prevent blood loss

4- WBC's which are found in blood gives us immunity from various microbes

5- it transport nutrients like glucose to every cell

there are many other uses also like blood transports hormones secereted by endocrine glands