Blood is a connective tissue made up of plasma, red blood cells, Platelets, and white blood cells.
The force exerted by blood on the inside Walls of arteries is called blood pressure
Systolic and diastolic pressure
The spleen stores And produces lymphocytes. , lymphocytes attack or mark pathogens in the blood.
The thymus is The gland that produces T cells that are ready to fight infection.
Respiration is The process by which a body gets and uses oxygen and releases carbon dioxide And water