淋巴系统0-文档资料讲解学习.ppt
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1、淋巴系统0-文档资料January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 第一节 总 论淋巴系统淋巴系统由淋巴管道、淋巴组织和淋巴器官组成。淋巴管道和淋巴结的淋巴窦内含有淋巴液,简称为淋巴。淋巴系统是心血管系统的辅助系统,协助静脉引流组织液。此外,淋巴器官和淋巴组织具有产生淋巴细胞,过滤淋巴和进行免疫应答的功能。January,2007Copyright Depart.Anatomy,School of Medicin
2、e,Lanzhou University.All right reserved by YP HOU and YF SONG 淋巴的循环过程示意图 心脏心脏 淋巴导管淋巴导管 动脉动脉 静脉静脉 毛细血管毛细血管 淋巴干淋巴干 组织间隙组织间隙 毛细淋巴管毛细淋巴管 淋巴管淋巴管 细胞细胞 January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 淋巴系统一、淋巴系统的组成和结构特点二、淋巴回流的因素三、淋巴侧支循环Janu
3、ary,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 淋巴管道淋巴组织淋巴器官一、淋巴系统的组成和结构特点January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 毛细淋巴管淋巴管淋巴干(9条)淋巴导管(2条)(一)淋巴管道January,2007Copy
4、right Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 毛细淋巴管(lymphatic capillary)以膨大的盲端起始,互相吻合成毛细淋巴管网,汇入淋巴管。淋巴管(lymphatic vessel)由毛细淋巴管吻合而成,注入淋巴结。其管壁结构与静脉相似,内有瓣膜,可防止淋巴液回流,外观呈串珠样。淋巴管分为浅、深淋巴管两类,之间有丰富的交通。January,2007Copyright Depart.Anatomy,School of Medicin
5、e,Lanzhou University.All right reserved by YP HOU and YF SONG 淋巴干(lymphatic trunk)由淋巴结发出的淋巴管在膈下和颈根部汇合而成。其包括腰干、支气管纵隔干、锁骨下干、颈干各两条和一条肠干,共九条。淋巴导管(lymphatic duct)淋巴干合成两条淋巴导管,即胸导管和右淋巴导管,分别注入左、右静脉角。January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and Y
6、F SONG 淋巴干和淋巴导管January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG(二)淋巴组织弥散淋巴组织 (消化道和呼吸道粘膜固有层)淋巴小结 孤立淋巴滤泡孤立淋巴滤泡 集合淋巴滤泡集合淋巴滤泡 淋巴小结淋巴小结January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU
7、 and YF SONG(三)淋巴器官淋巴器官包括:淋巴结胸腺脾脏扁桃体January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 淋巴结 淋巴结(lymph node)为大小不一的圆形或椭圆形灰红色小体,一侧隆凸,另一侧凹陷,凹陷中央处为淋巴结门。淋巴结门有神经和血管出入。与淋巴结凹侧相连的淋巴管称输入淋巴管,出淋巴结门的淋巴管称输出淋巴管。January,2007Copyright Depart.Anatomy,Scho
8、ol of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 形态:圆形或椭圆形灰红色小体数目:不恒定,青年人约400500个。位置:可分为浅淋巴结和深淋巴结,多沿血管 排列,位于关节的屈侧和体腔的隐藏部 位。功能:滤过淋巴、产生淋巴细胞和进行免疫应 答。January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 淋巴结结构January
9、,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 二、淋巴回流的因素l回流量:安静时,每小时约120ml淋巴入血l参与回流的因素:a)淋巴管泵b)动脉搏动c)肌肉收缩与运动d)胸腔负压e)运动和按摩January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 三
10、、淋巴侧支循环l淋巴管之间有丰富的交通支,参与构成淋巴侧支循环。当炎症、寄生虫、异物或肿瘤栓子阻塞淋巴管,外伤或手术切断淋巴管时,淋巴经交通支回流,形成淋巴侧支循环。l侧支循环的功能:u优点:炎症和外伤时,侧支保证了正常组织和病变组织的淋巴回流;u缺点:淋巴侧支通路可成为病变扩散或肿瘤转移的途径。January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 第二节 淋巴导管 January,2007Copyright Depa
11、rt.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 一、胸导管l胸导管(thoracic duct)是全身最大的淋巴管。长度:30-40cm起止:乳糜池(平12下缘)-左静脉角行程:自12胸椎下缘上行,经主动脉裂孔 进胸腔;在脊柱前方行至颈部。收集范围:两下肢、盆腹部、左胸部、左上肢、左头颈部,即全身3/4部分的淋巴。January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.A
12、ll right reserved by YP HOU and YF SONG 乳糜池位于第一腰椎前方,呈囊状膨大,接受左、右腰干和肠干。胸导管在乳糜池处接受左、右腰干和肠干,在注入左静脉角处接受左颈干、左锁骨下干和左支气管纵隔干。胸导管有丰富交通支,在临床上有重要意义。January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 胸导管示意图January,2007Copyright Depart.Anatomy,Schoo
13、l of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 胸导管的位置January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 二、右淋巴导管l右淋巴管(right lymphatic duct)由右颈干、右锁骨下干和右支气管纵隔干,注入右静脉角。长度:1-1.5cm起止:右侧三条淋巴干汇合点-右静脉角收集范围:右肺、右半心、右半胸廓
14、、右上肢、右头颈部,即全身部分的淋巴。January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 右淋巴导管示意图January,2007Copyright Depart.Anatomy,School of Medicine,Lanzhou University.All right reserved by YP HOU and YF SONG 淋巴导管收纳范围January,2007Copyright Depart.Anat
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