full male reproductive system.

Male reproductive system is located in the pelvis region. It Consists of – a pair of testis, glands, accessory ducts, external genitalia.

Testes-

• Smooth organ situated outside the abdominal cavity within a pouch called
• The ******* helps in maintaining the low temperature of the testis which is 2-2.5^O C which is below than the normal internal body temperature.
• Each testisis 4 to 5 cm in length and 2 to 3 cm in width in adults.
• Each testis contains about250 compartments called testicular lobules.
• Each testicular lobules contain one to three highly coiled seminiferous tubules, in which sperms are produced.
• The wall of each seminiferous tubuleis lined by two types of cells called male germ cells (spermatogonia) and Sertoli cells.
• The male germ cells undergo meiosis leading to sperm formation and Sertoli cells provide nutrition to the germ cells.
• The regions outside the seminiferous tubules called interstitial spaces contain small blood vessels and interstitial cells or Leydig cells.
• Leydig cells synthesize and secrete testicular hormones called androgens.

Accessory ducts-

• The male accessory ducts include rete testis, vasa efferentia, epididymis and vas deferens.
• The seminiferous tubules of the testis open into the vasa efferentia through rete testis.
• The vasa efferentia leave the testis and open into epididymis located along the posterior surface of each testis.
• The epididymis leads to vas deferens that ascends to the abdomen and loops over the urinary bladder.
• Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct.
• The urethra originates from the urinary bladder and extends through the ***** to its external opening called urethral meatus.

Accessory glands-

• The male accessory glands include paired seminalvesicles, prostate gland and paired bulbourethral glands.
• Accessory glands secrete seminal plasma which is rich in fructose, calcium and some enzymes
• Secretion of bulbourethral gland also helps in lubricating the *****.

External genitalia-

• The ***** is the male external genitalia.
• Some special tissues make up the ***** which helps in the erection of the *****.
• The enlarged end of ***** called the glans *****.
• Foreskin, a loose fold of tissue covers the glans *****.