Hormonal Changes At Puberty
HORMONAL CHANGES AT PUBERTY
- Puberty – Triggered by gonadotropins (FSH & LH).
- Signals gonads (testes/ovaries).
- Triggers estrogen & progesterone production in women.
- Testosterone in men & some testosterone production in women.
TESTOSTERONE:
Functions:
In both male & female:
- Development of pubic hair.
- Accelerated bone growth.
- Typical body odor & acne development during puberty.
In males:
- Responsible for virilization process.
- Penis enlargement.
- Increased libido.
- Growth of facial & chest hair.
ESTROGEN:
- Major hormone responsible for female pubertal development.
- Causes breast development & endometrial thickening.
- Promotes bone maturation & epiphyseal plates closure in long bones.
PROGESTERONE:
- Causes acinar proliferation in mammary glands.
- Converts watery cervical secretion to viscid & scanty.
LEPTIN:
- Facilitates Gonadotropin Releasing Hormone (GnRH) release.
- Helps in pubertal onset by this permissive action.
Other hormones:
- Involved in Thyroxine & Growth Hormone.
Exam Question
HORMONAL CHANGES AT PUBERTY
- Puberty is triggered by release of gonadotropins (FSH & LH).
- Puberty triggers estrogen & progesterone production in women & testosterone in men.
- Testosterone is responsible for the development of pubic hair, accelerated bone growth, body odor and acne during puberty
- Estrogen is major hormone responsible for female pubertal development.
- Estrogen promotes bone maturation & epiphyseal plates closure in long bones.
- Progesterone causes proliferation of acini in mammary glands and converts watery cervical secretion to viscid and scanty.
- Leptin facilitates the release of Gonadotropin-Releasing hormone (GnRH), thereby helping in pubertal onset by this permissive action.
- Other hormones involved in puberty are thyroxine & growth hormone.
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