AP BIOLOGY

Detailed explanation-1: -Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections, and carries hormones around the body. Blood is made up of blood cells and plasma.

Detailed explanation-2: -The carbon dioxide is absorbed from the cells by the blood plasma (some of it binds to hemoglobin too) and is transported back to the lungs in the bloodstream. There it leaves the body when we breathe out.

Detailed explanation-3: -Capillaries have thin walls that allow oxygen, nutrients, carbon dioxide and waste products to pass through, to and from the tissue cells. Veins then carry the blood back to your heart, and the process begins again.

Detailed explanation-4: -Your circulatory system, also called the cardiovascular system or vascular system, transports oxygen, nutrients and hormones to your body’s cells to use for energy, growth and repair. Your circulatory system also removes carbon dioxide and other wastes your cells do not need.

Detailed explanation-5: -Blood vessels are like networks of roads where deliveries and waste removal take place. Oxygen, nutrients and hormones are delivered around the body in the blood and carbon dioxide and other waste products are removed.