Lab2 Fetal Pig Dissection, Human sexuality

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Fetal Pig dissection
Human sexuality

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Lab2 Fetal Pig Dissection, Human sexuality

  1. 1. Lab 2 : FETAL PIG DISSECTION and Human Reproduction
  2. 2. Know Structure and FUNCTION <ul><li>There are boxed notes on the functions of mammalian organs on pp. 43-44 of the manual. </li></ul><ul><li>To know for practical: </li></ul><ul><li>Chambers of the heart, function, valves </li></ul><ul><li>Major system organs, function, identify from photos of dissections & models </li></ul><ul><li>digestive system, circulatory, brain, urinary, respiratory, reproductive (inc names & functions of the hormones) </li></ul><ul><li>Bones in skeleton – names </li></ul><ul><li>birth control, reproductive anatomy & function (from models) </li></ul>
  3. 3. There is formaldehyde in these specimens <ul><li>A. Wear gloves. </li></ul><ul><li>B. May wear masks or aprons. </li></ul><ul><li>C. Wash pig when take out of bag. </li></ul><ul><li>D. Pour excess liquid into waste container. </li></ul>Fetal pig dissection
  4. 4. Start with the outer features of the pig...
  5. 5. Initial cuts on the fetal pig View a video of this at http:// www.youtube.com/watch?v =D0EhPMo06Kk
  6. 6. Suture techniques <ul><li>Running locking stitch </li></ul><ul><li>http:// www.youtube.com/watch?v =hV9MJ6_e4s4 </li></ul>Other stitches http://emedicine.medscape.com/article/1128240-overview
  7. 7. The mammalian cardiovascular system
  8. 8. The mammalian heart http://science.nationalgeographic.com/science/health-and-human-body/human-body/heart-article.html?navA-Z Pg 903-905 in Campbell The fetal heart evolves through several different stages inside the womb, first resembling a fish's heart , then a frog 's, which has two chambers, then a snake 's, with three, before finally adopting the four-chambered structure of the human heart. 60,000-mile-long (97,000-kilometer-long) network of vessels in your body beating 100,000 times a day, 40 million times a year
  9. 9. Adult pig heart Frankfort Anatomical Position
  10. 10. Fetal adaptations <ul><li>Foramen ovale </li></ul><ul><ul><li>-- Right atrium -> left atrium </li></ul></ul><ul><li>B. Ductus arteriosus </li></ul><ul><li>pulmonary artery -> aortic arch (bypass lungs) </li></ul>
  11. 11. Fetal blood circulation <ul><li>Umbilical vessels </li></ul><ul><ul><li>Umbilical arteries arise from iliac arteries in legs, take unoxygenated blood to placenta. </li></ul></ul><ul><ul><li>2. Umbilical vein carries oxygenated and nutrient rich blood from placenta into liver. </li></ul></ul>mother fetus
  12. 12. The mammalian respiratory system Pg 919 – 921 in Campbell
  13. 13. Negative pressure breathing
  14. 14. Buccal Cavity
  15. 15. The human digestive system
  16. 16. Liver <ul><ul><ul><ul><li>Produce bile. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Breakdown red blood cells. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Convert glucose to glycogen and vice versa. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Convert monosaccharides to glucose. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Remove excess amino acids and deaminate, producing urea. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Detoxify drugs. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Convert amino acids to glucose (gluconeogenesis). </li></ul></ul></ul></ul>
  17. 17. Pancreas <ul><ul><ul><ul><li>Raises gut pH. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Amylase hydrolyses starch. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Lipase hydrolyses fats. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Cleaves peptide bonds. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Hydrolyses nucleic acids. </li></ul></ul></ul></ul>
  18. 18. The human excretory system P 962-967 in Campbell
  19. 19. Adult sheep kidney
  20. 20. The human skeleton
  21. 21. Anatomy of the eye
  22. 22. You must know both male and female anatomy (Chapter 4) <ul><li>Swap specimens once you have studied the anatomy of your pig. </li></ul><ul><li>There are models of human male and female reproductive anatomy for study as well. </li></ul>
  23. 23. Brain – know names of parts http://thebrain.mcgill.ca/flash/d/d_05/d_05_cr/d_05_cr_her/d_05_cr_her.html
  24. 24. P 1004-5 in Campbell
  25. 25. Oogenesis P 1008-13 in Campbell
  26. 27. The reproductive cycle of the human female Birth control: Progesterone and estrogen
  27. 30. Spermatogenesis
  28. 31. Structure of a human sperm cell
  29. 32. How many sperm per ejaculation?
  30. 33. Mechanisms of some contraceptive methods
  31. 34. <ul><li>This chart from: http://www.healthystartcoalition.org/Assets/Images/Birth%20Control%20Methods.jpg </li></ul><ul><li>Another good source: http://www.fda.gov/Fdac/features/1997/babyguide2.pdf </li></ul>Birth control
  32. 35. What is this? <ul><li>http://www.med.unc.edu/embryo_images/unit-welcome/welcome_htms/contents.htm </li></ul>
  33. 36. Development of human genitalia
  34. 37. Female orgasm <ul><li>75% of woman do not have an orgasm by vaginal intercourse that is unaccompanied by stimulation of the clitoris </li></ul><ul><li>5-10 % of adult women have never had orgasms. </li></ul><ul><li>A Critic Takes On the Logic of Female Orgasm http://www.nytimes.com/2005/05/17/science/17orga.html?_r=1 </li></ul>Levin, R. (2007, February). Sexual activity, health and well-being – the beneficial roles of coitus and masturbation. Sexual & Relationship Therapy , 22 (1), 135-148.
  35. 38. <ul><li>http://www.reallifechoices.org/images/random/std_chart.gif </li></ul>
  36. 40. STD questions <ul><li>Do condoms provide protection from all STDs? </li></ul><ul><li>Do all STDs have a cure? </li></ul><ul><li>What is the most common STD? </li></ul><ul><li>Can you get a STDs from oral sex? </li></ul>
  37. 41. STD Risk by activity <ul><li>Relative safety of various couplings: (men/women man/man, woman/woman, giving/receiving, oral / vaginal / anal) </li></ul>http://www.sfcityclinic.org/stdbasics/stdchart.asp Department of Public Health, City & County of San Francisco What is safe sex?
  38. 42. Questions? <ul><li>Go Ask Alice – health services at Columbia University </li></ul><ul><li>http://www.goaskalice.columbia.edu/Cat7.html </li></ul>

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