Question

What is blood?
Define briefly||
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Answer 1

Answer:

Your blood is made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets. Red blood cells (RBC) deliver oxygen from your lungs to your tissues and organs.

Answer 2

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• Blood is a body fluid in human beings and other other animals which is responsible for the transportation of various nutrients, oxygen and hormones also it transports metabolic waste products away from those same cells. Blood accounts for 7% of human body weight.
• The blood cells are mainly red blood cells(also called RBCs or erythrocytes), white blood cells (also called WBCs or leukocytes) and platelets (also called thrombocytes).
• Red blood cells transports oxygen carbondioxide and nutrients because of their special disk shape which help them to transport more at once.
• White blood cells protects us from foreign particles and disease. It forms the immune system of our body.Platelets are important in the clotting of blood.