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Seminiferous tubules develop central lum...

Seminiferous tubules develop central lumen after

A

Birth

B

Prepubertal time

C

Puberty

D

Old age

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**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks when the seminiferous tubules develop a central lumen. The options provided are after birth, pre-pubertal time, puberty, and old age. 2. **Defining Seminiferous Tubules**: Seminiferous tubules are structures located in the testes where spermatogenesis (the production of sperm) occurs. They are crucial for male fertility. 3. **Development Timeline**: The development of the male reproductive system, including the seminiferous tubules, begins at puberty. Puberty typically occurs between the ages of 12 and 16 in boys. 4. **Role of Puberty**: During puberty, significant hormonal changes occur that stimulate the growth and maturation of the male reproductive system. This includes the development of the seminiferous tubules and the formation of a central lumen within them. 5. **Conclusion**: Since the question specifically asks when the central lumen of the seminiferous tubules develops, and given that this development occurs during puberty, the correct answer is "puberty." 6. **Final Answer**: The seminiferous tubules develop a central lumen at puberty. ---
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks when the seminiferous tubules develop a central lumen. The options provided are after birth, pre-pubertal time, puberty, and old age. 2. **Defining Seminiferous Tubules**: Seminiferous tubules are structures located in the testes where spermatogenesis (the production of sperm) occurs. They are crucial for male fertility. 3. **Development Timeline**: The development of the male reproductive system, including the seminiferous tubules, begins at puberty. Puberty typically occurs between the ages of 12 and 16 in boys. ...
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