My Bio Exam 2 Notes

My Bio Exam 2 Notes - Lecture 1 (2/26/08) (Reproduction...

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Lecture 1 (2/26/08) (Reproduction Continued) Hypothalamus à Gonadotropin-Releasing Hormone (GnRH) Anterior Pituitary à Gonadatropins Follicle Stimulating Hormone (FSH) Luteinizing Hormone (LH) Ovary à Steroid sex hormones Estrogen progesterone Gonadotropic hormones – FSH and LH Ovarian Hormones – estrogen and progesterone Ovarian and Uterine cycle : Menstruation à Preovulatory phase à Postovulatory Phase Developing follicle à mature follicle à Ovulation à Corpus luteum à degenerated corpus luteum. FSH is the follicle stimulating hormone—the important one. What causes “simple” menstrual cramps? Prostogalndins in the uterus in the time of menstrual. Spermatogenesis: Spermatogonia, primary spermatocygte, 2 secondary spermatocytes, 4 spermatatids, 4 sperm. Sperm Cells are only 10% of the body of Semen. Anterior Pituitary à Gonadatropins Follicle Stimualgin Homrone (FSH) Luteinizing Homrone (LH) Testes (interstitial cells) Androgens (testosterone) Fertilization: 400 milllion sperm is ejaculated—only a few hundred reach the egg. Sperm get to the egg as fast as 20 min or so after ejaculation—how? Time Frame fo Fertilization
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Secondary oocyte – viable 24 hours after ovulation (optimal 12 hour) Sperm – Viable from 48 to as long as 72 hours after ejaculation (optimal 24 hours)
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Lecture 2—First Lecture With The New Guy—2/29/08 Dr. Gregg Transue Office: 214 ARC 732-445-2594 gtransue@rci.rutgres.edu Administrative issues Dr. Martin/GB Office Weekly Review Session Wednesdays 3-4:30pm Busch MSLC Bio Room (Starting next week) Computer work: http://alca.rutgers.edu/bio102/compwork08.htm Virtual Lab: http://bio.rutgers.edu/~gb102/virtuallabs_102.html Level Of Importance According to Transue: 1. Lectures 2. Note-taking 3. Book 4. Exam questions Development Stages of Development (Humans) 1. Fertilization 2. Cleavage 3. Blastulation 4. Gastrulation 5. Organogenesis 6. Neurolation 7. Other Systems What controls development? (Couldn’t write it down fast enough) A. Stages of Development 1. Fertilization 2. Cleavage 3. Blastulation
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4. Gastrulation 5. Organogenesis Differing Life History Traits/Strategies -Echinoderms -Frog -Chicken -Humans I.E: Some species put more emphasis on survival, others know they wont survive long and put more emphasis on reproduction. Yolk: -Echinoderms: Essentially none -Frog: Moderate -Chicken: Lotta energy in there -Humans: Essentially none 1. Fertilization i. Gamete anatomy a.) Human sperm anatomy: The acrosome is most important part. b.) Human Egg Anatomy: Follicle with a Zona pellucid and granulose cells. After Ovulation: Corona Radiata(outer ring), Zona Pellucida(Middle layer), Egg cell membrane (Egg cell membrane) Starfish Egg Human Egg Vitelline Envelope ßà Zona Pellucida Jelly Coat Corona Radiata Both non-cellular ii. Species Identification Internal vs. External fertilization In Starfish: - Bindin on acrosome - Receptors on Vitelline Envolope In Mammals: - Receptors on Zona Pellucida - Glycoprotein “ZP3”
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This note was uploaded on 04/04/2008 for the course BIO 102 taught by Professor Brey during the Spring '08 term at Rutgers.

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My Bio Exam 2 Notes - Lecture 1 (2/26/08) (Reproduction...

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