Anatomy of blood vessels & their types and function in tamil #lovemedics #medicalstudent #anatomy

‪@lovemedics‬ Blood vessels are part of the circulatory system and are classified into three main types, each with distinct structures and functions: 1. Arteries Large blood vessels that carry oxygenated blood away from the heart to the body. Thick, elastic walls withstand high pressure. The largest artery, the aorta, branches into smaller arteries and eventually into arterioles. 2. Arterioles Smaller branches of arteries that lead to capillaries. They play a critical role in regulating blood flow and pressure by constricting or dilating. Arterioles control how much blood enters the capillary beds of tissues and organs. 3. Capillaries The smallest and thinnest blood vessels, connecting arterioles to venules. Thin walls (one cell thick) allow for the exchange of gases, nutrients, and waste products between blood and tissues. Capillaries form networks known as capillary beds, enabling efficient transport. 4. Venules Small blood vessels that collect deoxygenated blood from capillaries and transport it to veins. Venules gradually merge to form larger veins, continuing the return of blood to the heart. They have thinner walls than arterioles and are involved in immune responses by allowing white blood cells to pass into tissue. 5. Veins Large vessels that carry deoxygenated blood back to the heart. Thinner walls and larger lumens compared to arteries. Contain valves to prevent backflow, especially important in the legs where blood must travel upward against gravity. Difference between Artery and vein Difference between arteriole and venule Describe the path of blood from artery to vein