Mahsulot tavsifi:

Blood vessels play a crucial role in the body's circulatory system. They include arteries, veins, capillaries, and lymphatic vessels. Arteries carry oxygenated blood away from the heart, while veins return deoxygenated blood to the heart. Capillaries facilitate direct exchange of substances between blood and tissue cells. The lymphatic system helps in maintaining fluid balance and immune function. The structure of blood vessel walls includes the tunica intima, tunica media, and tunica externa.