Advertisements
Advertisements
Question
Explain the process of hormonal regulation of spermatogenesis.
Advertisements
Solution
- Spermatogenesis starts at the age of puberty due to a significant increase in the secretion of gonadotropin-releasing hormone (GnRH). This is a hypothalamic hormone.
- The increased levels of GnRH then act at the anterior pituitary gland and stimulate the secretion of two gonadotropins luteinising hormone (LH) and follicle-stimulating hormone (FSH).
- LH acts at the Leydig cells and stimulates the synthesis and secretion of androgens. Androgens, in turn, stimulate the process of spermatogenesis.
- FSH acts on the Sertoli cells and stimulates the secretion of some factors which help in the process of spermiogenesis.
APPEARS IN
RELATED QUESTIONS
Meiotic division during oogenesis is different from that in spermatogenesis. Explain how and why?
Which hormone secreted by the hypothalamus initiates spermatogenesis at puberty?
How long does the entire process of spermatogenesis take from spermatogonium to mature sperm?
Spermatogenesis involves two major events. What is the second major event?
What is the chromosome count and ploidy level of a spermatogonium?
At which stage does the chromosome number reduce from diploid (2n) to haploid (n)?
What is the chromosome count of a primary spermatocyte?
How many haploid spermatids are produced from one primary spermatocyte?
During which phase of spermatogenesis do primordial germ cells undergo repeated mitotic divisions?
Which of the following correctly represents the sequence of cellular divisions and transformations in spermatogenesis?
