AP BIOLOGY

Detailed explanation-1: -The amount of blood circulating within an individual depends on their size and weight, but the average human adult has nearly 5 liters of circulating blood. Women tend to have a lower blood volume than men. However, a woman’s blood volume increases by roughly 50% during pregnancy.

Detailed explanation-2: -The average adult has around 10 pints of blood (roughly 8% of your body weight). Making a blood donation uses about 1 pint, after which your body has an amazing capacity to replace all the cells and fluids that have been lost.

Detailed explanation-3: -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.

Detailed explanation-4: -Blood is a fluid connective tissue composed of 55% plasma and 45% formed elements including WBCs, RBCs, and platelets. Since these living cells are suspended in plasma, blood is known as a fluid connective tissue and not just fluid.

Detailed explanation-5: -It has four components-plasma, red blood cells, white blood cells and platelets. It has the function of transporting oxygen and nutrients throughout the body. The blood flows through veins, arteries and capillaries. It has about 55 % plasma and 45% blood cells.