MEDICAL PHYSIOLOGY

Detailed explanation-1: -Blood is pumped from the ventricles into large elastic arteries that branch repeatedly into smaller and smaller arteries until the branching results in microscopic arteries called arterioles. The arterioles play a key role in regulating blood flow into the tissue capillaries.

Detailed explanation-2: -Capillaries are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow oxygen, nutrients, carbon dioxide and waste products to pass to and from the tissue cells.

Detailed explanation-3: -Capillaries are delicate blood vessels that exist throughout your body. They transport blood, nutrients and oxygen to cells in your organs and body systems.

Detailed explanation-4: -Blood flows through three types of blood vessels: Arteries carry oxygen-rich blood away from your heart. Capillaries are tiny, thin blood vessels that connect veins and arteries. Veins carry oxygen-poor blood from your body’s tissues back to your heart.