Question

Describe the composition of human blood stating the function of blood cells

Answer 1

human blood consists of two parts plasma and blood cells. plasma is a yellowish straw like liquid in which many proteins and other substances are dissolved.
blood cells are of three types erythrocytes thrombocytes and leukocytes

erythrocytes or red blood cells are used for transportation specially of oxygen with the help of respiratory pigment called haemoglobin
thrombocytes or blood platelets are associated with blood coagulation
UK size are used for protection and killing any foreign body that enters into our body