Answer :
Following are the main constituents of blood:
● Plasma- The liquid matrix of the blood.
● Red blood cells - Red blood cells play an important role in your health by carrying fresh oxygen throughout the body.
● White blood cells - White blood cells (WBCs)also called leukocytes or leucocytes, are the cells of the immune system. They are responsible for protecting the body against diseases.
● Platelets - Platelets are tiny blood cells that help your body form clots to stop bleeding.
If any blood vessel is damaged, it sends out signals that are picked up by platelets.
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