The changes of puberty in boys, such as a deeper voice and facial hair, are driven mainly by
Correct answer: A. testosterone
- A. testosterone
- B. oestrogen
- C. progesterone
- D. insulin
Explanation
Testosterone from the Leydig cells stimulates the development of male secondary sexual characteristics and continues to support sperm production. Oestrogen and progesterone are the principal female sex hormones, though small amounts occur in both sexes.
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About Human Reproductive System
The human reproductive system includes the male and female organs that produce gametes, secrete sex hormones and support fertilization and development. Questions cover the testes, ovaries, reproductive ducts, menstrual and ovarian cycles, ovulation, fertilization, implantation, placenta formation and the roles of FSH, LH, oestrogen, progesterone and testosterone.
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