General Anatomy - Lymphatic System PDF

General Anatomy The Lymphatic System By Prof. Dr. Manal Albadawi Definition: Drainage system ,assist the venous system in return of excess interstitial fluids) Characters of lymph: clear but lymph from intestine has a milky appearance. chyle rich in protein and lymphocytes. passes throu...

General Anatomy The Lymphatic System By Prof. Dr. Manal Albadawi Definition: Drainage system ,assist the venous system in return of excess interstitial fluids) Characters of lymph: clear but lymph from intestine has a milky appearance. chyle rich in protein and lymphocytes. passes through many filters called lymph node. drains finally in venous system. Site Function  Site & Function: -Maintaining the fluid balance -Immunity -Absorb the digested fat -Transport the large molecule (enzymes, hormones) Components: - Lymph fluid (Character – Formation – Circulation – Drainage) - Lymph capillaries (Character) - Lymph vessels (Character) - Lymph nodes (Site – Function) - Lymphatic tissues: Tonsils – Adenoid Spleen (Site – Structure) R. innominate v. - Lymph capillaries L. innominate v. - Lymph vessels Right lymphatic Thoracic duct - Lymph nodes duct - Lymph vessels ¼ Right ¾ Thoracic lymphatic duct duct Innominate veins Compoent of lymphatic system: 1- lymph vessels: larger in diameter and more permeable than capillaries lymphatic capillaries join each other to form large vessels that contain valves interrupted by LN for filtration of foreign body materials like pus, bacteria and malignant cells. usually run along blood vessels toward the venous system finally all lymph vessels form two major ducts that end in corresponding innominate vein LT——————-> thoracic duct. RT————————> lymphatic duct 2-lymph node Collection of lymphoid tissue that lies along the course of lymph vessels and also in some strategic anatomical sites Axillary LN: in axilla Inguinal LN : in upper area of lower limb Cervical LN of the neck R. innominate v. L. innominate v. Thoracic duct Right lymphatic duct Structures without lymphatics Structures rich in lymphatics Brain, spinal cord Mucous membrane Bone marrow, spleen Serous membrane Cornea and cartilage Glands Epidermis Dermis Lymphatic tissues Spleen Site – Structure