Group of small arterial blood vessels, richly supplied with nerves, and connecting to veins.
A small communication between a tiny artery and vein in the skin of the limbs. It is concerned with the regulation of temperature. Occasionally its malformation and overgrowth produces a small painful tender red swelling (glomus tumor). This may be cauterized or removed surgically.
A small, round swelling made of tiny blood vessels and found in stromata containing many nerve fibers.
The initial form of the glomerule found in the developing kidney of an embryo.