Spermatogenesis in promoted by

Options

A. Oestrogen
B. Progesterone
C. Oxytocin
D. Testosterone.

Answer

**Step-by-Step Solution:**

1. **Understanding Spermatogenesis**: Spermatogenesis is the process of sperm cell development that occurs in the male reproductive system, specifically in the seminiferous tubules of the testes.

2. **Identifying Hormones**: The question lists four hormones: oestrogen, progesterone, oxytocin, and testosterone. We need to determine which of these hormones promotes spermatogenesis.

3. **Analyzing Each Hormone**:
- **Oestrogen**: This is primarily a female sex hormone involved in the regulation of the female reproductive system. It does not promote spermatogenesis.
- **Progesterone**: Another female hormone, it plays a role in the menstrual cycle and pregnancy but does not have a direct role in spermatogenesis.
- **Oxytocin**: This hormone is involved in childbirth and lactation. It stimulates uterine contractions and milk ejection but does not influence spermatogenesis.
- **Testosterone**: This is the primary male sex hormone. It is crucial for the development and maintenance of male reproductive tissues, including the stimulation of spermatogenesis.

4. **Conclusion**: Based on the analysis, testosterone is the hormone that promotes spermatogenesis. Therefore, the correct answer is option number 4: testosterone.

**Final Answer**: Testosterone promotes spermatogenesis.

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