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 Produced by endocrine glands  Male endocrine glands = Testes  Female endocrine glands = Ovaries.

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Presentation on theme: " Produced by endocrine glands  Male endocrine glands = Testes  Female endocrine glands = Ovaries."— Presentation transcript:

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2  Produced by endocrine glands  Male endocrine glands = Testes  Female endocrine glands = Ovaries

3  What happens when a male or female goes through puberty? Why?

4  Testosterone Secondary Sex Characteristics = Enable body to produce gametes ◦ Lower pitch voice ◦ Causes the testicles to descend ◦ Changes in body form ◦ Growth of beard/body hair Throughout the life of a man, his body will continue to produce testosterone, although the production rate will decline in old age.  Females also produce testosterone ◦ Helps with osteoporosis & production of estrogen

5  Estrogen & Progesterone – produced by ovaries  LH & FSH – produced by pituitary gland ◦ Luteinizing Hormone ◦ Follicle-Stimulating Hormone  Functions = 1. Secondary Sex Characteristics = enable body to produce gametes ◦ Development of breasts ◦ Change in body form ◦ Growth of body hair 2. Enable body to prepare for pregnancy **Men also produce estrogen and progesterone!!

6 1. The release of a mature egg from a follicle 2. The preparation of the uterus for pregnancy

7  Begins a puberty  Ends at menopause  “Normal” (average) cycle is 28 days  can vary greatly and is affected by illness, stress and other factors.

8  Four stages: 1.Follicle stage 2.Ovulation 3.Corpus leutem stage 4.Menstruation

9  Four stages: 1.Follicle stage: ◦ FSH stimulates maturation of egg in follicle. ◦ Estrogen from follicle stimulates uterine lining to thicken. ◦ This takes days to complete

10  Four stages: 2.Ovulation – ◦ Mature egg released from follicle. ◦ FSH inhibited by estrogen -> stimulates release of LH ◦ This happens around/on day 14.

11  Four stages: 3.Corpus luteum stage – ◦ days in length ◦ Burst follicle develops into corpus luteum -> produces progesterone ◦ Progesterone stimulates further thickening of uterine lining.

12  Four stages: 4.Menstruation – ◦ occurs if no egg is fertilized. ◦ Progesterone secretion decreases ◦ Uterine lining degenerates ◦ Tissue/blood are discharged from body

13  Estrogen  Progesterone

14  FSH  LH

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