BIOL 1410 Lecture Notes - Lecture 13: Thymus, Cisterna, Mucosa-Associated Lymphoid Tissue

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1410
• Professor: Paul Messing

Document Summary

Includes: lymph vessels + organs, t & b lymphocytes. Protect body against bacteria, viruses, cancer cells: major extracellular fluids, blood plasma. Fluid in blood: isf (interstitial fluid) Bathes cells (except blood cells: lymph. Isf (interstitial fluid) formed by capillaries leaking plasma: 90% re-enters blood in capillaries + venules, 10% into lymphatic circulation (now called lymph) Drains into right subclavian vein reentering circulation (subclavian = below clavicle: 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 left subclavian vein reentering blood circ. Summary one way route back to blood: 1: lymphatic tissues & organs[20. 3][20. 2][20. 5, red bone marrow, primary lymphatic organs + tissues: B lymphocytes mature and proliferate (mitosis) here. T lymphocytes mature and proliferate (mitosis) here: secondary lymphatic organs + tissues: (where lymphocytes proliferate, thymus gland, lymph nodes.