BISC276 Lecture Notes - Lecture 22: White Pulp, Collecting Duct System, Ileum
20 Dec 2016
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Document Summary
Lymphatic system is closely allied with the cardiovascular (returns excess interstitial fluid to circulation) and the digestive systems (absorption of fatty foods). It is also part of the immune system (covered in microbiology) which provides mechanisms for the defense against disease. Lymphatic system structure and function: lymphatic system components, a fluid called lymph. Interstitial fluid drains into lymphatic capillaries, thus forming lymph. Lymphatic capillaries have a slightly larger diameter than blood capillaries and have overlapping endothelial cells which work as one-way valves for fluid to enter the lymphatic capillary. (like veins ) Anchoring filaments attach endothelial cells to surround tissue. There are 2 ducts: thoracic duct and is the main collecting duct of the lymphatic system. Receives lymph from the left side of the head, neck, and chest, the left upper extremity, and the entire body below the ribs. It drains lymph into venous blood via the left subclavian vein. *does most of the work: right lymphatic duct.
