ANAT 216 Lecture Notes - Lecture 11: Internal Jugular Vein, Subclavian Vein, Cisterna Chyli
2 Oct 2017
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Document Summary
Anatomy 216 (reading material: chapter 23: pages 608-615) Returns fluid escaped from blood back to the blood. Hold leaked fluid volume (max 3. 6l per day) Consists of: interstitial fluid resembles blood plasma but with fewer proteins, lymphocytes cells responsible for immune system, various macrophages. Lymphatic capillaries lymphatic collecting vessels lymphatic trunk lymphatic duct. Lymph outside lymphatic system is called interstitial fluid. Extremely permeable vessels due to modifications: endothelial cell overlap (not tightly connected), and presence of bundles of filaments that anchor filaments to connective tissue. Very thin wall, with single layer of nuclei difficult to see wall under microscope. When interstitial fluid volume is greater outside the pressure force ends of endothelial cells away from each other to open door for interstitial fluid to flow in. The pressure inside will eventually become greater inside the vessel, this causes the endothelial cells to close again, preventing the fluid from leaving. Similar to veins in structure but with more internal valves.
