Sex Hormones

Sex hormones are produced by the zona reticularis of the adrenal glands in addition to those produced by the ovary and testis:

• Testis: Produces androgens:
  • Increase mitoses in skin.
  • Increase sebaceous secrretion.
  • Increase hair growth.
• Ovary: Produces oestrogens and progesterone. Effects of oestrogens include:
  • Decreased collagen production.
  • Decreased sebaceous secretion.
  • Decreased epidermal thickness.
  • Decreased hair growth.
  • Increased skin pigmentation.