Genital Tract Anatomy PDF

 Male genital organs Female genital organs Primary Testis Ovary Sex Organ  Duct system: o Epididymis  Duct system:...

 Male genital organs Female genital organs Primary Testis Ovary Sex Organ  Duct system: o Epididymis  Duct system: o Vas Deferens o Uterine tubes Secondary o Ejaculatory Duct o Uterus Sex Organs  Accessory glands: o Vagina o Seminal Vesicle o Prostate o Bulbo-Urethral External Penis Clitoris Genital Organ Anatomist “genital tract”  Male genital organs Testis Site: in the scrotum Function: 1. Production of the sperms by spermatogonia. 2. Secretion of testosterone by Leydig cells. Structure: Testis is surrounded by serous sac “tunica vaginalis” Testis is surrounded by fibrous capsule “tunica albuginea” Capsule is thickened posteriorly to form mediastinum of testis. is divided into 250 lobules by fibrous septa. seminiferous tubules containing:  Germinal cells “Spermatogonia”: produce the sperms.  Sertoli cells: give nutrition to the sperms. Tubules join each other at the mediastinum forming rete testis Rete testis connect the testis to the head of epididymis through vasa effrentia. Anatomist “genital tract”  Duct system Epididymis Length: 6 meters of highly coiled tube Site: on posterior border of testis. Parts: Head, body & tail Function: 1. Storage of the sperms. 2. Site of maturation of the sperms. 3. Secretion of seminal fluid Vas deference Length: 45 cm. Begin: at the tail of the epididymis. End: Joins duct of seminal vesicle forming ejaculatory duct Ejaculatory duct Begin: union of vas deferens with duct of the seminal vesicle. End: opens into the prostatic urethra. Anatomist “genital tract”  Accessory glands Seminal vesicle Site: on the base of urinary bladder Function: Secretion of seminal fluid & prostaglandins Termination: Joins vas defference forming ejaculatory duct Prostate Site: Below neck of urinary bladder. Function: Secretion of seminal fluid Transversed by: prostatic urethra & ejaculatory ducts Bulbo-urethral “Cowper” gland Site: In the deep perineal pouch Function: Secretion of seminal fluid Termination: in penile urethra Male urethra Length: 20 cm Parts:  Protattic :the widest part  Membranous: the shortest & narrowest part  Penile: the longest part Anatomist “genital tract”  Female genital organs Ovary Function: 1. Production of oogonia. 2. Secretion of the female sex hormones: Estrogen & Progesterone. Uterine “fallopian” tubes Length: 10 cm “4 inches”. Parts: 1. Intramural part: part inside the wall of the uterus.. 2. Istmus: is the narrowest part. 3. Ampulla: is the most dilated part “site for fertilization” 4. Infundibulum: close to the ovary with finger-like processes called fimbriae. Function: 1. Transport the sperms to the fertilization site. 2. transport the ova to fertilization site 3. Fertilization site: in the ampulla. 4. After fertilization, it transports the zygote to the uterine cavity. Anatomist “genital tract”  Uterus Length: 3 inches. Parts: 3 parts: 1. Fundus: is the upper end. 2. Body: is the largest part of the uterus. 3. Cervix: is the lower narrow third. It is separated from body of uterus by internal os & separated from vagina by external os. Wall: 3layers 1. Peri-mytrium: is the outer peritoneal layer. 2. Myo-mytrium: is the middle thick muscular 3. Endo-mytrium: is the inner epithelial Vagina Length: 3- 4 inches. Position:  Anterior: urinary bladder & urethra  Posterior: rectum & anal canal Termination: opens in the vestibule between urethra & anus Function: coupulatory organ & birth canal. Anatomist “genital tract”