HUMAN ANATOMY AND PHYSIOLOGY

 CIRCULATION OF LYMPH AND LYMPHATIC SYSTEM::

Lymph flows in a closed system of vessels called the lymphatic systems it consists of lymph sinuses which from lymphatic capillaries and lymph vessels the lymphatic capillaries are situated in the intercellular spaces and their walls are formed by endothelial cells supported by fibrous connective tissues lymph capillaries join to form lymph vessels there are superficial and deep lymphatic vessels they are found in skin blood vessels muscles and various visceral organs various lymph vessels are linked together by free anastomosis there are intervening lymphatic glands the lymphatic vessels are provided with one way valves which help the forward flow of lymph toward the chest the intestinal villi contain the primary lymphatics called lacteals nervous system has no lymphatics however it is not devoid of lymph since the cerebrospinal fluid flows in the CNS 

The lymphatic vessels then pass through the lymph nodes and gradually increase in size finally lymph is collected from the body and poured into the right lymphatic duct and the throracic duct or left lymphatic duct the right lymphatic duct opens in the right subclavian vien and the left lymphatic duct opens in the left subclavian vein the thoracic duct receives lymph from a cistern receptaculum chyli placed in the abdomen the left cervical duct also drains its lymph in the thoracic duct