Name the hormones necessary for development of egg cells in the ovaries. Name the hormones necessary for development of sperm in the testes. (pp. 245, 247)

The hormones necessary for the development of egg cells in the ovaries are: 1. Gonadotropin-releasing hormone (GnRH): This hormone is released by the hypothalamus and stimulates the release of other hormones from the anterior pituitary gland. 2. Follicle-stimulating hormone (FSH): This hormone, released by the anterior pituitary gland, is responsible for stimulating the growth and maturation of ovarian follicles, which contain the egg cells. 3. Luteinizing hormone (LH): Also released by the anterior pituitary gland, LH triggers ovulation, which occurs when a mature egg cell is released from the ovarian follicle. 4. Estradiol and progesterone: These hormones are produced by the ovaries and help to regulate the menstrual cycle, ensuring that the uterus is prepared to receive a fertilized egg, if it occurs.

The hormones necessary for the development of sperm in the testes are: 1. Gonadotropin-releasing hormone (GnRH): Similar to its function in the development of egg cells, GnRH is released by the hypothalamus and stimulates the release of other hormones from the anterior pituitary gland. 2. Follicle-stimulating hormone (FSH): In males, FSH released by the anterior pituitary gland is responsible for stimulating spermatogenesis or the production of sperm cells in the testes. 3. Luteinizing hormone (LH): Also called interstitial cell-stimulating hormone (ICSH) in males, LH released by the anterior pituitary gland stimulates the production of testosterone by interstitial cells (or Leydig cells) in the testes. 4. Testosterone: Produced by the testes, testosterone is essential for the development of sperm and also plays a crucial role in male secondary sexual characteristics such as hair growth, muscle development, and deepening of the voice.