1. Reproductive System Puberty (prep for reproduction)
Hormone regulation in men
Hormone regulation in women

2. What physical changes occur at puberty in males?

3. What physical changes occur at puberty in males?
Genital organs mature
Underarm, facial, pubic and body hair
Voice deepens
Muscles grow
Bone density increases

4. What physical changes occur at puberty in females?

5. What physical changes occur at puberty in females?
Menstrual cycle begins
Genital organs mature
Underarm and pubic hair
Breasts develop
Pelvis widens
Fat tissue on hips and breasts

6. Hormone Regulation
Hormone: a chemical in the blood that brings a message to 1 or more organs

7. Formation of spermatozoa
Spermatogenesis
Oogenesis
Description
Hormones
Formation of spermatozoa
Maturation of ovarian follicle (what surrounds ovum in ovary)
Follicle Stimulating Hormone (FSH) X
Luteinizing Hormone (LH)
Testosterone x
Estrogen
Progesterone

8. Erection Due to sexual arousal, cavities in the penis fill with blood
This increases its volume and hardness

9. Ejaculation Expulsion of semen by the penis into the vagina
Spermatozoa make their way through the uterus into the fallopian tube in order for just 1 to fertilize the ovum

10. Female Cycles 28 days Ovarian – in the ovaries
Menstrual – uterine endometrium (wall of uterus)

11. Time (days)
Stage
Description
Hormones involved
1 - 5
Menstruation
Endometrium expelled (bleeding)
FSH
↓Progesterone
6 - 14
Proliferation
Endometrium thickens
Estrogen
FSH and LH 14
Ovulation
Ovum from ovary to fallopian tube
continued
Secretory
Edometrium thickens
Progesterone