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【生殖系统】

功能:
·产生生殖细胞以繁衍后代,分泌性激素以维持性别特征。


男性
【内生殖器】
·睾丸
·附睾
·输精管&射精管
·前列腺


睾丸和附睾
·精曲小管产生精子
·间质产生男性激素

睾丸
形态位置
1.阴囊内左右各一
2.椭圆形表面光滑
3.两缘:前缘游离: 后缘:有神经血管出入,并与附睾和输精管睾丸部相接处
4.上端:被附睾头遮盖,下端游离

结构
·睾丸精曲小管能产生精子,精曲小管之间结缔组织内的间质细胞能分泌雄性激素。

附睾
·暂时储存精子
·供给精子营养
·使精子更成熟
·结核好发部位


输精管
·睾丸部
➥起于附睾尾
➥至睾丸上端处移行为精索部
·精索部
➥介于睾丸上端与腹股沟管浅环之间
➥临床上进行输精管结扎的常用部位
·腹股沟管部
➥输精管位于腹股沟管内的部分
·盆部
➥最长,延盆壁向后下
➥在输尿管末端
➥前内方转至膀胱底后面
➥两侧靠近膨
➥输精管末端扩大形成输精管壶腹
·精索
➥睾丸上端至腹股沟管深环之间的一对柔软的圆索状结构
➥主要结构有输精管、睾丸动脉、蔓状静脉丛、神经丛和淋巴管


射精管
·由输精管壶腹的末端与精囊的排泄管汇合而成
·精囊排泄管与输精管壶腹的末端汇合成射精管


前列腺
·分为尖,底,体
·临床前列腺肥大通过直肠指诊,扪前列腺沟,此沟消失



【男性尿道】
·有排尿和排精的功能
·全长16-22cm
·起于膀胱的尿道内口
·终于阴茎头的尿道外口

分为三个部分
➥前列腺部(前部)
➥尿道膜部(前部)
➥尿道海绵体部(后部)

狭窄、膨大&弯曲
3个狭窄⇒尿道内口、尿道膜部、尿道外口
➥尿道结石会先到达输尿管,容易嵌顿在这些狭窄部位
3个膨大⇒尿道前列腺部、尿道球部、尿道舟状窝
2个弯曲⇒耻骨下弯、耻骨前弯



女性
【内生殖器】
·卵巢
·输卵管
·子宫
·阴道


卵巢
·
     
 
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