2015_EXAM_II_A_KEY

NAME _______________________________________ ANSC 224 EXAM II Form A: April 3rd, 2015 Please write your FULL NAME on this form and then on the Scantron (NET ID and TEST FORM). Each question is worth 2 points each. 1. The single mucosa layer of cells and the sub-mucosa that contains glands that line the uterus are collectively known as : a. Chorioallanotis b. Myometrium c. Serosa d. Endometrium e. All of the above 2. GnRH is a(n) ___________hormone that is released from the ____________. a. Steroid / ovary b. Steroid / hypothalamus c. Glycoprotein / Anterior pituitary d. Peptide / Posterior pituitary e. Peptide / Hypothalamus 3. The gestation length for a cow is approximately: a. 280 days b. 114 days c. 150 days d. 340 days e. 215 days 4. Which of the following hormones act directly or indirectly to regulate smooth muscle contractions in the female reproductive tract? a. Oxytocin b. Prostaglandin c. Estrogen d. Progesterone e. All of the above 5. A pig, cow, and horse could have their uterus classified as: a. Endotheliochorial b. Bicornuate c. Myometrial d. Polytoccous e. All of the above 1 This study source was downloaded by 100000810233954 from CourseHero.com on 05-03-2022 20:32:30 GMT -05:00 https://www.coursehero.com/file/12724043/2015-EXAM-II-A-KEY/ Endometrium Part of uterus Chastwolayers mucosa single layerof lumenepithelium submucosa glands vessels nerves smooth folds caruncles Interact in sperm embryo peptide smallGnRH oxytocin harticgonadotropinreleasinanamone aasmanrendecaearertie synthesizes.name potnaiamusauste s.enewonscsusentoniccenters resuatesinenesisanraeaseatanatamaxatemina unanseacartenancamanesinenemenerstancines cow pig ewe Horse oxytocin Asman peptide rostand estrogen malfatttalattprogestero Binasrecentors Para insmoothmuaecensin produedinuters uterus mammarisians Induces contraction of causes contraction uterus smoothmuscle bladressers Bicornuate µ Simplex anons Body yo cervix no horns vagina arenas swine.cat e.sn.e cervix horse.cat cos vagina Duplex znornscnoboays znanscnona.is vagina o horns nobody cervix no cervix i vagina or cervix urosentaisinus Cloacacnorasina rabbit rodents marsupial kangaroo monotremes opposum platypus

6. The number of cell layers that divide the mother from the conceptus are important because it affects: a. Transfer efficiency of nutrients and removal of wastes b. Protection from the cells of the mothers immune system c. Passage of molecules by their size d. All of the above e. B and C only 7. In natural mating with cattle, humans, horses, and pigs, the tip of the penis is inserted into the _______________to ejaculate semen. a. Uterus b. Vagina c. Cervix d. All of the above e. B and C only 8. An example of a positive feedback effect would include: a. Estrogen effects on LH b. Progesterone effects on LH c. Inhibin effects on FSH d. Prostaglandin effects on progesterone e. All of the above 9. Many hormones are released in episodic patterns in blood that are called: a. Pulses b. Basal c. T ½ or half life d. feedback e. clearances 10. The primary method in a cyclic animal for terminating luteal lifespan is _________ from the __________ a. Prostaglandin release from the uterus b. LH release from the pituitary c. ACTH release from fetal pituitary d. Progesterone release from the corpus luteum e. Placental signals to the mother 11. Differences between steroid and protein hormones are evident in: a. Water solubility b. Receptor location in a cell c. Presence or absence of amino acids d. All of the above e. A and B only 2 This study source was downloaded by 100000810233954 from CourseHero.com on 05-03-2022 20:32:30 GMT -05:00 https://www.coursehero.com/file/12724043/2015-EXAM-II-A-KEY/ concert us Embryo fetusand membrane secrete molecules that regulate the function of maternal lymphocyte Tip of penis pass through vaginato contact cervix positive feedback is a process that occur which is enhancement or amplification of an effect by itsan influence when estrogen level produces sudden release Function of uterus is Lutea Regression uterus releases prostaglandin par the reaches ovary via countercurrent exchange Lutea regressed within regression steroid protein Glycoprotein sman Larger amino acid Estrogen progesteroneAndresen are chains chosiles chains esh aah not water soluble water soluble and to nuclear receptor Bind to external resent

19. Starting at day __________ in women, under declining ___________the endometrium is expected to slough off. a. Day 1 / progesterone b. Day 5 / estrogen c. Day 15 / LH d. Day 10 / hCG e. None of a the above 20. The source of the hormone that initiates natural parturition is: a. The mother’s uterus b. The placental membranes c. The corpus luteum d. The fetal hypothalamus e. The mother’s posterior pituitary 21. Twinning in horses a. Can result in loss of both and birth of weak foals b. Is normal since mares produce equine chorionic gonadotropin c. is heritable and can be selected for d. None of the above e. B and C only 22. Progesterone production has important functions in the uterus which include: a. Inducing uterine contractions b. Causing loss of the endometrium c. Suppressing gland development d. Inducing prostaglandin release e. None of the above 23. Counting days for the estrous cycle of animals is based on ________ while counts for women are based on __________: a. 1 st day of vulval swelling / 1 st day of corpus hemorrhagicum formation b. First day of estrus / last day of menstruation c. First day of estrus / first day of menstruation d. First day of refusal to stand / first day of menstruation e. CH formation and bleeding / LH surge or temperature rise 24. The cells of the corpus luteum originate from the: a. Granulosa and theca cells b. Blood cells from capillary leakage at ovulation c. Counter current endometrial cell flow from the uterus d. Cortex cells migration into the follicle e. Medulla cell migration into the ruptured follicle 25. Which of the following might affect age at puberty? a. Body weight and condition b. Male exposure c. Season d. All of the above e. A and C only 4 This study source was downloaded by 100000810233954 from CourseHero.com on 05-03-2022 20:32:30 GMT -05:00 https://www.coursehero.com/file/12724043/2015-EXAM-II-A-KEY/ Endometrium begins to Slough muscosaa submuscos Folliclephase begins a es engncreases a endometrium reboil progesterone t FetalCRH induces FetalACTH and causes fetal adrenalcortisol FetalHex matures ancan respond to stress can respond to placental hormone orsignal Progesterone effects In uterus Endometrial gland growth and secretions secretory phasesHyper to In primates uterus continues to thick Inhibitsmyometrial contraction reducesestrogen longest LH induces these and granulosa cell luteinization t Corpus luteum formation involves remodeling withcell hyperplasia and hypertrophy Age at Puberty Feeding for growth s want gaining Maturity 213 mature body weight Male exposure pheromones Season

26. In many species, the key signal for the establishment of pregnancy originates from the: a. Embryo b. Ovary c. Fetal hypothalamus d. Mother’s Uterus e. Mother’s hypothalmus 27. Of the following species which would have an estrus lasting 5 days or more? a. dog b. horse c. cat d. All of the above e. A and C only 28. During embryonic development, the _______ is the default reproductive duct system due to absence of the ________: a. Male / Y chromosome b. Female / X chromosome c. Female / Y chromosome d. Male / X chromosome e. There is no duct development in the embryonic stage 29. In an example of ovarian negative feedback, if both ovaries of a cow were roved that had a corpus luteum, what would happen to progesterone and LH patterns in blood ? a. Decrease /decrease b. Increase / increase c. Increase / decrease d. Decrease / increase e. None of the above 30. What is the general term used to describe a difficult birth? a. Breach b. Dyspnea c. Dystocia d. Abortion e. Stillbirth 31. The hormones FSH and LH are released from the: a. Hypothalamus b. Anterior pituitary c. Ovary d. Uterus e. Posterior pituitary 5 This study source was downloaded by 100000810233954 from CourseHero.com on 05-03-2022 20:32:30 GMT -05:00 https://www.coursehero.com/file/12724043/2015-EXAM-II-A-KEY/ In female mammals xx Muller ran ductsParan and ovaries begin to develop It Y chromosome prese genes expressed cause testes toform an muller and to regress Mit Dystonia Difficult birth extended duration poor presentation Biggest distocia prob due to y't heit Rotation failure win a etasize maternal sew is

a. Same sex twins that compete for testosterone or estrogen and one becomes a hermaphrodite b. Male and female twins share blood and the males becomes feminized and sterile c. Two females share blood supply and one becomes XXX and is sterile d. Male and female fetuses share a blood supply and the female becomes androgenized and sterile e. The fusion of the reproductive system of the male and female twins to create a hermaphrodite 40. Ovulation in chickens occurs: a. In the AM 6 h after LH surge b. In the PM 24 h after LH surge c. Always the same time each day d. At the same time as the LH surge e. 12 h before the LH surge 41. Which of the following would be identified as an induced ovulator? a. Cat b. Rat c. Pig d. All of the above e. A and B only 42. The dog is unique in that when it ovulates it a. Has a CL that does not produce progesterone b. Has a CL that lasts the duration of pregnancy c. Requires repeated mating during a long estrus to form a CL d. All of the above e. None of the above 43. A retained placenta is associated with: a. Failure to pass by 24 h after birth b. Failure to pass within 2 hours following birth c. A difficult birth d. A and C only e. B and C only 44. The oviduct has important functions that involve which of the following? a. Sperm transport b. Ova transport c. Embryo attachment d. All of the above e. A and B only 45. In the hormone pathway to produce estrogen, the first step in the complete hormone pathway is the conversion of __________ to ________________. a. Cholesterol to estrogen b. Androgen to estrogen c. Progesterone to cholesterol d. Androgen to progesterone e. Cholesterol to progesterone 7 This study source was downloaded by 100000810233954 from CourseHero.com on 05-03-2022 20:32:30 GMT -05:00 https://www.coursehero.com/file/12724043/2015-EXAM-II-A-KEY/ Induced ovulator reflex ovulatory neuroendocrineresponse ovulates and formsa co crime span so dass at gestation ovulates on 22 3 longest ru pi estrus u start with istda at refusal a formation bean antes panis Godat Retained Placenta common with Coty ledonary often leads to infection

46. In induced ovulators, stimulation of the cervix causes ovulation by: a. Direct neuron connection to induce muscle contraction on the ovary b. Hormonal release of LH from cervix c. Neural signaling through the nervous system to release GnRH and LH d. Hormones in male ejaculate that induce ovulation e. All of the above 47. The female(s) that will show large follicle development during both the luteal and follicular phases of the cycle would include the: a. sow b. woman c. cow d. All of the above e. B and C only 48. In a group of randomly cycling cows, what percent of the cows would be expected to cycle within a 10 day observation period? a. 100% b. 75% c. 50% d. 25% e. 0% 49. The hormone most likely to maintain follicle health and that would also stimulate follicle growth would be called: a. Oxytocin b. LH c. Estrogen d. Progesterone e. FSH 50. In the cat, ovulation only occurs if a. There is a large follicle b. an LH surge occurs c. mating occurs d. all of the above e. A and B only 8 This study source was downloaded by 100000810233954 from CourseHero.com on 05-03-2022 20:32:30 GMT -05:00 https://www.coursehero.com/file/12724043/2015-EXAM-II-A-KEY/ Powered by TCPDF (www.tcpdf.org) In hypothalamus neural signals induces GnRHre leas estrogen induces Larrow GnRH incuesin surge FSH Follicle stimulating Hormone