Test: Male Reproductive System - Class 12 MCQ

Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct

Seminiferous tubules are located within the testis and is a location of meiosis. On average, they have 50 cm length and is heavily coiled. Generally, 750-1200 seminiferous tubules are seen in a human. Their functions are to produce sperm, maintain them and store them.

So the correct range is '750-1200'.

The seminiferous tubules of the test is open into the vasa efferentia through rete testis.

Secretions of these glands constitute the seminal plasma which is rich in fructose, calcium and certain enzymes.

The secretions of bulbourethral glands also helps in the lubrication of the penis.

The secretions of bulbourethral glands also helps in the lubrication of the penis.

The male sex accessory ducts include rete testis, vasa efferentia,
epididymis and vas deferens correct sequence and another name of vasa efferentia is efferent ductules.

The scrotum helps in maintaining the low temperature of the testes (2–2.5^oC lower than the normal internal body temperature) necessary for spermatogenesis.

In adults, each testis is oval in shape, with a length of about 4 to 5 cm and a width of about 2 to 3 cm.

Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct.

The male accessory glands include paired seminal vesicles, a prostate and paired bulbourethral glands.

The enlarged end of penis called the glans penis is covered by a loose fold of skin called foreskin.

Leydig cells synthesise and secrete testicular hormones called androgens. Other immunologically competent cells are also present.

Cauda epididymis is last part of Epididymis which connect to vas deferens.

Each seminiferous tubule is lined on its inside by two types of cells called male germ cells (spermatogonia) and Sertoli cells.

The male accessory glands include paired seminal vesicles, a prostate and paired bulbourethral glands.

Caput epididymis is first part of epididymis in continuation with vasa efferentia.

The regions outside the seminiferous tubules called interstitial spaces, contain small blood vessels and interstitial cells
or Leydig cells.

Vas deferens  acts as secondary store house for sperm.

Sertoli cells (nurse cell or sustentacular cells) are the columnar nutritive cells emerging from germinal epithelium that keeps sperms with their head buried into it to draw nutrition. Inhibin secreted by this cells inhibits FSH synthesis.

In some mammals like Bat, rat and other rodents seasonal descend of testis takes place whereas in Dolphin, sloth, armadillo, hedge hog, Whales, elephants, monotremes and seals testis are abdominal in position.

In some mammals like Bat, rat and other rodents seasonal descend of testis takes place whereas in Dolphin, sloth, armadillo, hedge hog, Whales, elephants, monotremes and seals testis are abdominal in position.

Inguinal hernia : Sometimes, due to weak inguinal ring the intestinal part descends in scrotum which is painful condition.    

Sertoli cell produce Inhibin which inhibits FSH synthesis i.e. it has negative feedback effect with FSH.