Veins Arc-shaped

**Arcuate veins** (lat. venae arciformes, synonym: vullon veins) - vessels of the circulatory system, flow into the external jugular and internal thoracic veins. They branch mainly in the fascia of the arms and abdomen. It got its name from the shape of its sources, which actually resemble an arc; in children, the vessels occur between the vertebral arteries. The area of ​​innervation is the subclavian nerve. Main tributaries: lateral laryngeal and paravertebral veins. Features of the anatomy of blood vessels: - they connect certain areas of the internal environment of the body - blood, tissue fluid, lymph - having the same structure;

- blood vessels have the greatest permeability and porosity of the walls of all organisms. This is due to the fact that simultaneously with the function of transporting substances, they perform metabolic processes; - the composition of the walls of the internal environment is constant and quite dense; the circulatory system is constantly renewed. Due to the exchange that occurs, waste substances are removed along with the blood; the length of the vessels is relatively small; - blood flow speed is different in different parts of the vascular network; the vessel wall has a lumen, and then