MICROANATOMY

Detailed explanation-1: -Oxygen, carbon dioxide, nutrients, and wastes are exchanged through the thin walls of the capillaries.

Detailed explanation-2: -Overview. Capillaries are tiny vessels that transport blood, nutrients and oxygen to cells in your organs and body systems.

Detailed explanation-3: -Capillary Exchange Mechanisms Diffusion, the most widely-used mechanism, allows the flow of small molecules across capillaries such as glucose and oxygen from the blood into the tissues and carbon dioxide from the tissue into the blood.

Detailed explanation-4: -Oxygen gas is able to pass through the endothelium, into the surrounding interstitial fluid, and taken in by the body cells surrounding the capillary beds.