AP BIOLOGY

Detailed explanation-1: -A capillary is a microscopic channel that supplies blood to the tissues themselves, a process called perfusion. Exchange of gases and other substances occurs in the capillaries between the blood and the surrounding cells and their tissue fluid (interstitial fluid).

Detailed explanation-2: -Nutrients and waste exchange between the blood and body tissues occurs at the capillary bed. Venules are exit vessels in the capillary bed of various organs and unite to form veins, which return the blood to the heart. The arteriolar wall consists of three layers of cellular and extracellular components.

Detailed explanation-3: -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-4: -Capillaries allow the exchange of gasses, nutrients, hormones, and other molecules in the blood. These materials are exchanged with the cells of the body. Carbon dioxide and waste are transferred from the body to the capillaries.

Detailed explanation-5: -Capillaries are the blood vessels that reach out to small cells and tissue, helping in the exchange of materials like oxygen, carbon dioxide, and waste. Capillaries are semipermeable so that material can be exchanged with surrounding cells.