Tiêu đề 22 chemical co-ordination n integration ppt - part 3.pdf ✅

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Gonads are 2 types: 1. Testes (Male gonad) 2. Ovary (Female gonad) HUMAN ENDOCRINE SYSTEM 9. GONADS
• It is the male primary sex organ and an endocrine gland. • A pair of testis is present in the scrotal sac. A. TESTIS HUMAN ENDOCRINE SYSTEM 9. GONADS
• It is formed of seminiferous tubules and interstitial (stromal) tissues. • Leydig (interstitial) cells in the inter- tubular spaces produce hormones called androgens (mainly testosterone). A. TESTIS HUMAN ENDOCRINE SYSTEM 9. GONADS
Functions of androgens  Regulate the development, maturation and functions of the accessory sex organs.  Spermatogenesis (sperm production).  Stimulate sexual behavior (libido), growth of muscles, hairs, aggressiveness, low pitch voice etc.  Help in anabolism of protein & carbohydrate. HUMAN ENDOCRINE SYSTEM 9. GONADS A. TESTIS