11-17. MALE SEX HORMONES
In the male, certain cells of the testes produce the male sex hormones, known
as androgens (for example, testosterone). Androgens are concerned with male
11-18. FEMALE SEX HORMONES
The sex hormones of the female are known as the estrogens and progesterone.
In the female, these hormones are secreted in a cyclic sequence, the menstrual cycle.
During this cycle, the hormones affect a number of tissues of the female body. These
tissues include the endometrium of the uterus, the milk-producing portions of the
mammary glands, and so forth. During pregnancy, the placenta continues the
production of progesterone.