Gonadele au functie endocrina si exocrina
Gonadele sunt glande mixte deoarece aufunctie endocrina si exocrina ,functia endocrina consta in formarea ovulelor (proces numit ovulatie ) iar functia exocrina produce hormonii sexuali feminin(progesteron si estrogen)
La barbati functia endocrina consta in formarea spermatozoizilor (proces numit spermatogeneza) ,iar functia exocrina consta in producerea de hormoni sexuali barbatesti (testosteron)