第二节 Section
输尿管 Ureter
（一）形态分段 (A) morphological segmentation
输尿管为一细长的肌性管道，长约20~30cm，分为三段，即腹段、盆段、壁内段。 Ureter is a slender muscular pipeline, about 20 ~ 30cm, divided into three sections, namely abdominal segment, pots segment, intramural segment.
（二）输尿管的狭窄 (B) ureteral stenosis
1． 1. 第一狭窄：位于起始处。 First stenosis: Located at the start.
2． 2. 第二狭窄：越过髂血管处。 Second stenosis: iliac vessels crossing place.
3． 3. 第三狭窄：穿膀胱壁处。 Third stenosis: wear bladder wall.
输尿管的狭窄 Ureteral stenosis
输尿管，细又长 Ureter, thin and long
上起肾盂下连膀 Since even the lower pelvis bladder
三处狭窄卡结石 Three narrow calculus card
起始越髂穿膀胱 Starting the iliac wear bladder
第三节 Section
膀胱 Bladder
（一）位置 (A) Location
膀胱位于盆腔中，前与耻骨联合相邻，空虚时不超过耻骨联合上缘，充盈时膨入腹腔，与腹前壁相贴。 Bladder in the pelvis, the front and adjacent to the pubic symphysis, when the emptiness of not more than the upper edge of the pubic symphysis, while expanding into the abdominal cavity filling, and the anterior abdominal wall with stickers.
（二）形态 (B) Form
膀胱为一肌性囊状器官，主要功能是贮尿。 Bladder is a muscular organ cystic main function is storage of urine. 空虚时呈锥体形，充盈时略呈卵圆形。 When was empty cone-shaped, slightly oval when filling.
（三）分部 (C) Division
膀胱可分为膀胱尖、膀胱底、膀胱体、膀胱颈四部。 Bladder can be divided into the bladder tip end of the bladder, the bladder body, bladder neck four.
（四）膀胱三角 (D) the bladder triangle
膀胱三角是膀胱底内面，两输尿管口与尿道内口之间的三角区域。 Triangle is a bottom surface of the bladder inside the bladder, ureteral orifice with two triangular area between the mouth of the urethra. 此区粘膜光滑无皱襞，是肿瘤和结核好发部位。 This area is smooth without mucosal folds, cancer and tuberculosis is a good site.
膀胱形态、分部膀胱三角意义 Bladder morphology, meaning Division bladder triangle
膀胱空虚锥体形 Bladder empty cone-shaped
顶尖底大体膨隆 Top end generally bulging
膀胱三角无皱襞 No bladder triangle folds
肿瘤结核易发生 Tuberculosis tumor prone
第四节 Section IV
尿道 Urethra
一、男性尿道 First, the male urethra
男性尿道起于膀胱内口，终于尿道外口。 Male urethra from the bladder inside the mouth, and finally the external urethral orifice. 兼有排尿与排精功能。 Both urination and ejaculation function.
（一）分部 (A) Division
男性尿道全长分为三部。 Total length of the male urethra is divided into three.
1． 1. 前列腺部 Prostatic
是穿行于前列腺内的一段，有前列腺、射精管的开口。 Is walking through a section of the prostate, prostate, ejaculatory duct openings.
2． 2. 膜部 Membranous
是贯穿尿生殖膈的部分，周围有尿道括约肌。 Throughout the urogenital diaphragm part around the urethral sphincter.
3． 3. 海绵体部 Cavernous department
是穿尿道海绵体内的部分。 Is part of the urethral sponge wear inside.
（二）前、后尿道的划分 (B) before and after the division of the urethra
1． 1. 前尿道 Anterior urethral
临床上将尿道海绵体部称为前尿道。 Clinically called anterior urethral spongiosum department.
2． 2. 后尿道 After the urethra
临床上将尿道前列腺部和膜部合称为后尿道。 Clinically prostatic urethra and the membranous urethra collectively known.
（三）三个狭窄 (C) three narrow
1． 1. 第一狭：尿道内口。 The first slot: mouth of the urethra.
2． 2. 第二狭：尿道膜部。 The second slot: membranous urethra.
3． 3. 第三狭：尿道外口。 The third slot: meatal. 是最狭窄的部位。 Is the most narrow site.
（四）两个弯曲 (D) two curved
1． 1. 耻骨下弯：凹向上，恒定。 Pubis recurved: concave upward constant.
2． 2. 耻骨前弯：凹向下，不恒定。 Pubis before bending: concave downward, not constant.
二、女性尿道 Second, the female urethra
女性尿道起自尿道内口，终于尿道外口。 Since the female urethra mouth of the urethra, and finally the external urethral orifice. 长约3~5cm。 About 3 ~ 5cm. 女性尿道特点：短、宽、直，易引起逆行感染。 Female urethra features: short, wide, straight, easy to cause retrograde infection.