PATHOLOGY

Detailed explanation-1: -It is made of epithelial cells and protects the body from damage. Complete answer: The skin is the part of the body that protects the body from the outer elements hence it is called the police guard of the body.

Detailed explanation-2: -White blood cells are bigger than red blood cells and normally are fewer in number. When a person has a bacterial infection, the number of white cells can increase dramatically. The white blood cell count shows the number of white blood cells in a sample of blood.

Detailed explanation-3: -Red cells, sometimes referred to as erythrocytes, pick up oxygen as blood passes through the lungs and release it to the cells in the body. White cells, sometimes referred to as leukocytes, help fight bacteria and viruses. Platelets help your blood clot in response to a cut or a wound.