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Warmup : January 6, 2014 (remember to write in complete sentences!)

Warmup : January 6, 2014 (remember to write in complete sentences!). Do you think that cloning human beings could be considered reproduction? Why or why not? What kind of reproduction is it?. Reproduction. The Story O f Life. Section objectives. How are sperm and eggs made ?

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Warmup : January 6, 2014 (remember to write in complete sentences!)

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  1. Warmup: January 6, 2014 (remember to write in complete sentences!) Do you think that cloning human beings could be considered reproduction? Why or why not? What kind of reproduction is it?

  2. Reproduction The Story Of Life

  3. Section objectives • Howarespermandeggsmade? • Howdoesfertilizationoccur? • Whatproblemscanhappeninthereproductivesystem?

  4. Male reproductive system Functions: 1. To make sperm 2. To deliver sperm to the female reproductive system

  5. Vas deferens Urinary Bladder Pubic Bone Prostrate gland Urethra Penis Epididymis Testis Scrotum

  6. Female reproductive system Functions: 1. To produce eggs 2. To protect and nourish developing offspring 3. To give birth

  7. Female reproductive system Ovary Fallopian tube Uterus Pubic bone Cervix Urinary bladder Urethra Vagina

  8. Problems with the reproductive system • Infertility (not enough healthy sperm or not ovulating properly • Cancer (disease in which cells grow at an uncontrolled rate) • HIV (human immunodeficiency virus)

  9. Menstrual cycle Egg released from ovary to fallopian tube (14th day) (ovulation) fertilization or not if no fertilization, lining is shed on 28th day uterus embryo develops into fetus

  10. In-class questions • How many sperm can a male make in one day? How many eggs does a female make? • Calculate: The average woman ovulates each month from about the age of 12 to about the age of 50. How many mature eggs does she release from age 18 to age 50? Assume that she has never been pregnant. • In women, some untreated STDs can block the fallopian tubes. How would this affect fertilization? • Fraternal twins are created when two sperm fertilize two different eggs. Paternal, or identical, twins are created when a single egg divides after fertilization. Why are fraternal twins not identical?

  11. Section objectives • Howarespermandeggsmade? • Howdoesfertilizationoccur? • Whatproblemscanhappeninthereproductivesystem?

  12. Homework: for Tuesday, January 7th, 2013 Read chapter 26: Section 2 and 3: expect a short 10 question quiz that will come directly from your reading of section 2.

  13. Warmup: January 7, 2014 (remember to write in complete sentences) • What purpose does the epididymis serve? • What is menstruation?

  14. the miracle of life

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