The capillaries have a thin wall, it contain the tunica intima a thick cell. It allows the materials between blood and tissue to be exchanged.The capillaries have a thin wall, it contain the tunica intima a thick cell. It allows the materials between blood and tissue to be exchanged.The capillaries have a thin wall, it contain the tunica intima a thick cell. It allows the materials between blood and tissue to be exchanged.The capillaries have a thin wall, it contain the tunica intima a thick cell. It allows the materials between blood and tissue to be exchanged.The capillaries have a thin wall, it contain the tunica intima a thick cell. It allows the materials between blood and tissue to be exchanged.The capillaries have a thin wall, it contain
