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Interstitial cells are ____.
Option: 1
Present near seminiferous tubules and secrete androgens.
Option: 2
Present in seminiferous tubules and help in sperms maturation.
Option: 3
Present in epididymis and secrete androgens.
Option: 4
Present in interstitial space and help in sperms motility.
Answers (1)
as we have discussed in the Male Reproductive System: Scrotum & Testes -
- The male reproductive system is located in the pelvic region.
- It includes a pair of testes along with accessory ducts, glands and the external genitalia.
Testes:
- There is a pair of testis whose size is 4.5 cm x 2.5 cm x 3 cm.
- It is oval in shape and pink in colour.
- Testes are held in the scrotal sac by thick fibrous tissue called spermatic cord or gubernaculum.
- The peritoneum, called mesorchium supports the testes.
- Each testis is surrounded by three layers:
- Tunica vaginalis: is the visceral layer of peritoneum.
- Tunica albuginea: is a dense fibrous cover under the tunica vaginalis.
- Tunica vasculosa: is a loose connective tissue and blood vessels.
- Tunica albuginea internally divides each testis into 200-300 lobules called testicular lobules.
- Each of these lobes consists of 1—3 convoluted seminiferous tubules.
- Seminiferous tubules is a tubular structure and its walls are made up of germinal cuboidal epithelium.
- There are two kinds of cells found in seminiferous tubules:
- spermatogenic cells (germ cells)
- Sertoli or supporting cells (nurse cells): These secrete Androgen Binding Protein (ABP) that concentrates testosterone in the seminiferous tubules. They also secrete inhibin.
- Between the seminiferous tubules, Leydig cells or Interstitial cells are found.
- These are polygonal in shape and secrete a male steroid hormone called testosterone.
- Testosterone controls the development of secondary sexual characters in males.
Hence, the correct option is (a).
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