淋巴系统解剖优秀课件.ppt
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1、淋巴系统解剖淋巴系统解剖第1页,本讲稿共15页Overview of the Lymphatic SystemIncludes,vessels,fluid,and nodes or nonsecreting glands.Lymphatic vessels convey fluid from the periphery to the veins.The fluid,lymph(=clear spring water),is what seeps out of the blood at the peripheral capillaries.Composition is similar to pl
2、asma without the proteinsLymphatic organs or tissues(glands)are filtering areas and arenas of lymphocyte maturation and competency.第2页,本讲稿共15页Major Functions of Lymphatic SystemFiltration of lymphReturn of seeped fluid to c.v.system“Education”and production of immune system lymphocytesTransport of d
3、igested lipids from small intestinal lacteals 第3页,本讲稿共15页Lymph CapillariesThin walled endothelium(no BM)with periodic one way valves.In general they parallel veins.Closed ends allow fluid flow inward only Pick up and recycle extra tissue fluid Lymph circulation due to?Compare to Fig.23.2第4页,本讲稿共15页L
4、ocation of Lymph CapillariesEverywhere,except for CNS and bone marrow,as well as cornea and cartilage.Special set of lymph capillaries in villi of small intestine=Lacteals第5页,本讲稿共15页Damaged valves or blockedlymph vessels?Lymphatic vesselscomparable in structure to veins第6页,本讲稿共15页Lymph capillaries c
5、onverge to become collecting vessels and end up as eitherThoracic duct or right lymphatic ductThoracic(left lymphatic)ductLeft subclavian veinRight lymphatic ductRight subclavian veinCysterna ChyliFig 23.4第7页,本讲稿共15页largest第8页,本讲稿共15页LymphocytesAgranulocytes-large nuclei and small amount of cytoplas
6、m Function in identification and inactivation/destruction of pathogensTypes of Lymphocytes1.T Cells-cellular immunity-specific for previously identified pathogensT Helper,T Killer,T Suppressor,and memory cells2.B Cells-humoral immunity-plasma cells produce antibodies specific to the antigen or patho
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