1 / 20

IPHY 3430 12-08-11 Final: Wed. Dec. 15,7:30 am Final is mandatory for everybody

IPHY 3430 12-08-11 Final: Wed. Dec. 15,7:30 am Final is mandatory for everybody .

chacha
Download Presentation

IPHY 3430 12-08-11 Final: Wed. Dec. 15,7:30 am Final is mandatory for everybody

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IPHY 3430 12-08-11Final: Wed. Dec. 15,7:30 amFinal is mandatory for everybody

  2. 3. Growth (Somatotropic) HormoneDoes not have target organ that secretes its own hormone.Controls growth after birth (via somatomedins)1. Growth of bone 2. Growth of soft tissues 3. Stimulates protein synthesis (uptake of amino acids and inhibition of protein degredation) 4. Synergistic with thyroid hormone

  3. Non-growth aspects of growth hormone actionEven in adults, growth hormone very impt.1. Increases lipolysis, 2. Decreases glucose uptake by tissues3. Spares protein, glucose 4. Blood levels increase 20x during starvation

  4. 4. ProlactinTarget--alveolar epithelium in mammary gland to promote secretion of milk

  5. Follicle stimulating hormone In women, causes growth of the follicle, causes follicle to produce estrogenEstrogen’s effects: 1. egg maturation and release, 2. growth and maintenance of entire female reproductive tract, 3. thins cervical mucous to allow sperm penetration 4. Growth of endometrium 5. Just about everything else

  6. 6. Luteinizing Hormone In women, causes ovulation of mature egg, conversion of follicle into corpus luteum, and secretion of estrogen and progesteroneIn males, causes interstitial cells of Leydig to secrete testosterone

  7. Regulation of hormone secretion from anterior lobeThyrotropin-releasing hormone (TRH)Corticotropin-releasing hormone (CRH)Gondadotropin-releasing hormone (GnRH)Growth Hormone-releasing hormone (GHRH) Somatostatin(inhibits GH release)Dopamine--inhibits release of prolactin

  8. How the pill workscontain estrogen/progesteroneTaken first 3 weeks of cycleHigher than normal levels negatively feedback on the hypothalamus, suppressing release of Gnrh, thus blocking the release of FSH, LHNo FSH, No LH--> no ovulationDrop in hormone levels at end of 3rd week causes small menstrual flow

  9. Average Failure ratePill 2-2.5% Norplant 1.0% IUD 4.0% vasectomy 0.2% tubal ligation 0.5% male condom 16% spermacides 30% diaphragm with spermacide 18% withdrawal 23%rhythm 20-30%

  10. Pancreatic HormonesInsulinreleased from  cellcauses decrease in blood glucosefacilitates glucose transport into cellsincreases synthesis of glycogenincreases synthesis of fatinhibits protein degradationactive transport of amino acids into cells

  11. Glucagonsecreted by  cellincreases blood glucoseincreases breakdown of glycogenpromotes fat breakdowninhibits protein synthesis, promotes protein breakdown

  12. DiabetesType I Type IIinsulin secretion none lotsonset childhood adulthood% diabetics 10-20% 80-90Obesity? No yestreatment insulin diet and ex.Genetic? Yes yesEnvironmental? Yes yes.

More Related