rete testis and enter the epididymis through the vasa efferentia. The epididymis is a single highly coiled tube that temporarily stores the spermatozoa and they undergo physiological maturation and acquire increased motility and fertilizing capacity. The epididymis leads to the vas deferens and joins the duct of the seminal vesicle to form the ejaculatory duct which passes through the prostate and opens into the urethra. The urethra is the terminal portion of the male reproductive system and is used to convey both urine and semen at different times.
It originates from the urinary bladder and extends through the penis by an external opening called urethral meatus. The accessory glands of the male reproductive system include the paired seminal vesicles and bulbourethral glands also called Cowper’s gland and a single prostate gland . The seminal vesicles secrete an alkaline fluid called seminal plasma containing fructose sugar, ascorbic acid, prostaglandins and CRYPTORCHISM The failure of one or both testes to descend down into the scrotal sacs is known as cryptorchism (crypto – hidden + orchis – testicle). It occurs in – percent of new born males.
A surgical correction at a young age can rectify the defect, else these individuals may become sterile and are unable to produce viable sperms. Urinary bladder Seminal vesicle Prostate gland Vas deferens Bulbourethral gland Epididymis Glans penis Scrotum Testis Ureter Blood vessels and nerves Vas deferens Epididymis Rete testis Tunica albuginea Tubulus rectus Seminiferous tubule Vasa efferentia Fig. . (a) Diagrammatic view of the male reproductive system Fig.
. (b) Testis showing inner details XII Std Biology-Zoology Chapter- XII Std Biology-Zoology Chapter- Human Reproduction the external genitalia located in the pelvic region (Fig. . a) .
These parts along with the mammary glands are integrated structurally and functionally to support the process of ovulation, Fertilization, pregnancy, child birth and child care. Ovaries are the primary female sex organs that produce the female gamete, ovum. The ovaries are located one on each side of the lower abdomen. The ovary is an elliptical structure about - cm