MICROANATOMY

Detailed explanation-1: -Capillaries are the simplest blood vessels. They are the smallest of the body’s blood vessels. The major function of capillaries is the exchange of gases and nutrients between blood and tissues.

Detailed explanation-2: -Exchange of Gases, Nutrients, and Waste Between Blood and Tissue Occurs in the Capillaries. Capillaries are tiny vessels that branch out from arterioles to form networks around body cells.

Detailed explanation-3: -Oxygen and carbon dioxide will move down their concentration gradients (from high to low concentration). These substances are exchanged between the capillary and interstitial fluid by the driving force of a pressure gradient.

Detailed explanation-4: -Capillaries are exchange vessels. Gases (oxygen and carbon dioxide), nutrients, and wastes pass in both directions across capillary walls. Blood flow in capillaries is pushed by the pumping of the heart. Since water gets though cell membranes easily, the circulating blood moves water through every cell of the body.

Detailed explanation-5: -Final answer: The absorption of nutrients and exchange of respiratory gases between blood and tissues takes place in capillaries.