Lymphatic System Anatomy PDF

### Introduction of anatomy * The lymph vessels have valves. * The thoracic duct is the largest and longest lymphatic vessel which drains the body except the upper right quadrant of the body which drains into right lymph trunk. * These lymph vessels drain into large veins in the root of the neck. *...

### Introduction of anatomy * The lymph vessels have valves. * The thoracic duct is the largest and longest lymphatic vessel which drains the body except the upper right quadrant of the body which drains into right lymph trunk. * These lymph vessels drain into large veins in the root of the neck. * Lymph drains eventually into the venous blood. * Lymph vessels are absent in the CNS, cornea, epidermis and cartilage. * Cisterna chyli drains the lower 1/2 of the body below the diaphragm. * The thoracic duct begins at the upper end of cisterna chyli and ends in the beginning of left brachiocephalic vein. ### Lymphatic system * The lymphatic system consists of the lymph nodes and lymph vessels as well as the spleen and tonsils. * It is important part of immune system. * The fluid circulating inside lymph vessels is called lymph which is rich in lymphocytes that combat infection, and contain large particles in the tissue fluid. * Lymph formation starts in the intercellular tissue spaces and flows inside the lymph vessels which are interrupted at various sites by masses of lymphoid tissues called lymph nodes. **Image Description:** The image shows an illustration of the human lymphatic system. The illustration highlights the lymphatic vessels and lymph nodes throughout the body. The diagram focuses on the thoracic duct and the major lymphatic vessels in the chest, including the right lymphatic duct, jugular lymph trunk, subclavian lymph trunks, brachiocephalic vein, and the accessory hemiazygos vein. The various lymph nodes are labelled and grouped according to their location (e.g. Lateral aortic lymph nodes, Retro-aortic lymph nodes). The image also shows the confluence of lymph trunks, cisterna chyli, and the location of the esophagus.