the smallest type of blood vessel. a capillary connects an arteriole (small artery) to a venule (small vein) to form a network of blood vessels in almost all parts of the body. the wall of a capillary is thin and leaky, and capillaries are involved in the exchange of fluids and gases between tissues and the blood.
the cell-wall
the arterial system
the rupture of a blood-vessel
毛細血管.
the rupture of a blood vessel
血管.
the blood flowing through an artery