male reproductive system and excretion

FSH role involves

• to act on sertoli cells and stimulate spermiogenesis

• to act on lydig cells and inhibits spermiation

• to enable epidydmis to function correctly

• all of the above

Select incorrect statements

• Difference between spermatogenesis and spermiogenesis is that in the first sperms are formed from spermatogonia and in later primary spermatocyte gets converted in spermatids

• In spermiation sperms moves from seminiferous tubule to its outer lining

• primary spermatocytes gets converted in secondary spermatocytes by meiosis

• spermatids are converted into sperms with the help of sperm maturation factors

Functions of male accessory ducts and glands are maintained by

• testicular hormones

• sertoli cells

• ovary

• FSH

leydig cells are

• present in seminiferous tubules and secrete androgen

• present in interstitial spaces secrete androgen

• present in seminiferous tubules help in sperm maturation

• present in interstitial spaces secrete sperm maturations

4. A person with tetraploidy will have _______ set of chromosomes in their Spermatids.

a) haploidb) triploidc) diploidd) polyploid

• a

• b

• c

• d

Tags

NGSS.HS-LS3-2

If a male is born with 3 million spermatogonia in each testis, the maximum number of sperms that he can produce in his lifetime is

• 24 million

• approx 12 million

• 36 million

• none of the above

mention the correct pair of hormone and its target cells in the context of spermatogenesis.

• Testosterone: Pituitary gland

• Follicle Stimulating Hormone: Sertoli cells

• Gonadotrophin: Leydig cells

• Luteinising Hormone: Sertoli cells

Testes descend permanently into their respective scrotal sacs through the ______

• inguinal canal

• glomerulus

• pudendal canal

• infraorbital canal

100 secondary spermatocytes will give rise to how many sperms

• 100

• 200

• 400

• 120

Tags

NGSS.HS-LS3-2

How many layers of glomerular epithelium are involved in the filtration of blood?

• 1

• 2

• 3

• 4

Answer explanation

Three layers of the glomerular epithelium of the Malpighian corpuscle are involved in the filtration of the blood. These layers include the endothelium of glomerular blood vessels, the epithelium of Bowman’s capsule and a basement membrane between these two layers.