BIOL 1412 Lecture Notes - Lecture 13: Cisterna Chyli, Subclavian Vein, Thoracic Duct
6 Jun 2017
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Lymphatic system: overview includes, lymph vessels + organs, t & b lymphocytes protect body against bacteria, viruses, cancer cells, major extracellular fluids. Isf (interstitial fluid) formed by capillaries leaking plasma: 90% re-enters blood in capillaries + venules, 10% into lymphatic circulation (now called lymph) Lymph: enters lymphatic capillaries (closed ended vessels, lymphatic capillaries connect to lymphatic collecting vessels (have valves) lymph nodes along vessels filter lymph (bacteria, debris) transport lymph fluid away from tissues to: a. i. 1) Right lymphatic duct (lymph from right head, chest, + arm) drains into right subclavian vein reentering circulation a. i. 2) Thoracic duct (lymph from below ribs + left body) collecting vessels from below the ribs converge to an enlarged lymph vessel = cisterna chyli (the beginning of the thoracic duct) Thoracic duct drains into l. subclavian vein reentering blood circ. Summary one way route back to blood: Primary lymphatic organs + tissues: red bone marrow lymphocytes arise here.
