Male reproductive system — A/L Biology

How do I practise Male reproductive system?

1 question with a worked solution

1. Which cells located in the interstitial tissue between the seminiferous tubules of the human testes are responsible for synthesizing and secreting testosterone?
   1. A) Primary spermatocytes
   2. B) Leydig cells (interstitial cells)
   3. C) Spermatogonia
   4. D) Sertoli cells (sustentacular cells)
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   Correct answer: B) Leydig cells (interstitial cells)

   Leydig (interstitial) cells reside in the connective tissue between seminiferous tubules and produce testosterone in response to Luteinizing Hormone (LH) from the anterior pituitary. Sertoli cells nourish developing spermatocytes.

   Show worked solution

   Step 1: Distinguish testicular cell types: - Spermatogonia: germ cells producing spermatozoa. - Sertoli cells: blood-testis barrier, phagocytosis, support spermatogenesis. - Leydig cells: androgen (testosterone) synthesis. Answer: Leydig cells (interstitial cells).
   Modelled on: the A/L Biology examination pattern

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Where does Male reproductive system fit in the syllabus?

Year 2 · Term 1