Splanchnology(lv)---Reproductive SystemQ
- Reproductive System Splanchnology (Ⅳ)
Formation:Gonad----producegermcell&sexualhormoneInternalgenital organsGenital ducts ---- transport germ cellAccessory glands ---- secrete fluidExternalgenitalorgans---Copulatoryorgan
Formation: Internal genital organs External genital organs Gonad - produce germ cell & sexual hormone Genital ducts - transport germ cell Accessory glands - secrete fluid - Copulatory organ
Male genital organsFormationGonad: testisGenitalducts:epididymis,ductusdeferensInternalgenitalorgansejaculatoryducts,urethraAccessoryglands:prostate,seminal vesicles,bulbourethralglandsExternal genital organs ---- scrotum, penis genital cells --- sperm, to maintain the life of species· sexual hormone --- maintain the 2nd characteristics for male,suchas thelaryngeal prominence is higher, themuscles are stronger,the beard & hairs are highly developed
Formation Internal genital organs External genital organs - scrotum, penis Gonad: testis Genital ducts: epididymis, ductus deferens, ejaculatory ducts, urethra Accessory glands: prostate, seminal vesicles, bulbourethral glands • genital cells - sperm, to maintain the life of species • sexual hormone - maintain the 2nd characteristics for male, such as the laryngeal prominence is higher, the muscles are stronger, the beard & hairs are highly developed. Male genital organs
Section1Internalgenital organsI.The gonad ---testisare suspended in the scrotumScrotum（1)Externalfeaturesoval-shaped organ·2 extremities --superior & inferior2 surfaces--- lateral & medial: 2 borders--- anterior & posteriorRight testis
Section 1 Internal genital organs Ⅰ. The gonad - testis oval-shaped organ • 2 extremities - superior & inferior • 2 surfaces - lateral & medial • 2 borders - anterior & posterior （1）External features • are suspended in the scrotum • Right testis Scrotum
(2) Structures of testis:? Septa testis②Lobulesoftestis③Contortedseminiferoustubules6@ Straightseminiferoustubules3?Retetestis2@Efferentductulesoftestis1?EpididymisDuctusdeferensTunica albuginea
（2）Structures of testis: ① Septa testis ② Lobules of testis ③ Contorted seminiferous tubules ④ Straight seminiferous tubules ⑤ Rete testis ⑥ Efferent ductules of testis ⑦ Epididymis ⑧ Ductus deferens ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ Tunica albuginea
细膜晚期精子细胜早期精子细胞机胞质桥支持细照次级精呼细照初级精母缅脑精康CSpermatozoa毛细血管闻质细脑肌祥国匙基膜Testosteronecontrolsthedevelopmentof malesecondarysexual characteristics
Spermatozoa Testosterone • controls the development of male secondary sexual characteristics
DuctusdeferensThe conveying ductsI.Epididymisstorehouseforspermssecretesemen·comma-shaped① HeadBody2 Tail3
The conveying ducts ① Head ② Body ③ Tail Ⅱ. Epididymis Ductus deferens • storehouse for sperms • secrete semen • comma-shaped ① ② ③
Il.Ductusdeferens: 50cm long, continuous with tail of epididymisD Testicular part --- shortest part② Funicular part --- can be palpated③Inguinal part--- pass through inguinal canal
Ⅲ. Ductus deferens • 50cm long, continuous with tail of epididymis ① Testicular part - shortest part ② Funicular part - can be palpated ③ Inguinal part - pass through inguinal canal ① ② ③
Pelvic partSeminalvesicle·the longestpartVasdeferens·runs alongthe lateral pelvicwall·ampulla --- the terminal dilated portion· joins with the excretory duct of seminalEpididymisvesicletoformtheejaculatoryductTestisAmpulla ductus deferentisSeminalvesicleProstate
Ampulla ductus deferentis ④ Pelvic part • the longest part • runs along the lateral pelvic wall • ampulla - the terminal dilated portion • joins with the excretory duct of seminal vesicle to form the ejaculatory duct Prostate Seminal vesicle
Funicular part can be palpated in the living body is the place where the vasectomy is performed
• can be palpated in the living body • is the place where the vasectomy is performed Funicular part