© 1995 Vevy Europe Photoimage Distribution pattern of the arterial, venous and lymphatic plexus of the skin. 1. Papillary capillaries; 2. dead-end starting lymph capillaries; 3. lymph branch of the superficial lymphatic plexus; 4. candelabrum-shaped communicating branches debouching into the dermal papillae; 5. super ficial venous plexus; 6. hair with its follicle and its vascularized venous and artery branches of the superficial plexus; 7. primary arteries and veins of the vasal plexus profundus; 8. lymph collector of the lymphatic system of the superficial plexus; 9. primary artery branch originating the artery plexus profundus; 10. venous and artery branches descending towards the subcutaneous adipose lobuli. In the papillary section, the lymphatic system is a closed systerm: consequently, the lymph circulates, in the first instance, outside the lymphatic system, directly bathing the dermic elements: this is the "plasmatic circulation" whi ch constitutes the internal means allowing nutritional exchange to take place. The plasmatic circulation which regulates the lymphatic circulation, is under the influence of the blood circulation; its exudation is regulated by blood pressure and by the os motic pressure of fluids, by nervous influences, endocrine influences, cellular metabolism, by the state of constriction and dilation of the vessels, and finally by the release of H vasodilatory substances emitted in large amounts by irritated cell tissue .