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单词 Urinary orifice
释义

Urinary orifice

中文百科

尿道 Urethra

(重定向自Urinary orifice)
人类男性尿道
女性尿道(图中“Urethra”所指之处)

尿道(拉丁语学名:Urethra)是动物体内泌尿系统的器官之一。它从膀胱连通到体外,它的作用是将尿排出体外。在雄性哺乳动物中它还有将精液导出的作用,因此也是生殖器官之一。在胚胎发育的过程中尿道是从泄殖腔的腹面产生的。

英语百科

Urethra 尿道

(重定向自Urinary orifice)
Urethra is number 2, dark yellow
Micrograph of urethral cancer (urothelial cell carcinoma), a rare problem of the urethra.

In anatomy, the urethra (from Greek οὐρήθρα – ourḗthrā) is a tube that connects the urinary bladder to the urinary meatus for the removal of fluids from the body. In male placental mammals, the urethra travels through the penis, and carries semen as well as urine. In female placental mammals, the urethra is shorter and emerges at the female external urethral orifice above the vaginal opening.

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