45 Questions for Exam 2 - Animal Reproduction | ANSI 3443, Exams of Animal Biology

Download 45 Questions for Exam 2 - Animal Reproduction | ANSI 3443 and more Exams Animal Biology in PDF only on Docsity! 2 ANSI 3443 EXAM 2 March 8, 2006 Question 1 thru 15 are worth 2 points each. For each of the following multiple choice items, choose the single most appropriate answer. 1. Capacitation is stimulated by the: A. Infundibulum. B. Vestibule. C. Corpus luteum’s secretion of progesterone. D. Oviductal secretions stimulated by estrogen. 2. In the mare, ovulation can only occur: A. At the ovulation fossa. B. Anywhere along the fused cortex and tunica albuginea. C. Anywhere along the germinal epithelium. D. Into the mesovarium. 3. The isthmus of the oviduct: A. Functions to transport oocytes. B. Functions to transport sperm. C. Is the site of semen deposit during natural mating in sheep. D. Removes oocyte(s) from the surface of the ovary. 4. The perimetrium: A. Is an extension of the broad ligament. B. Is the inner-most cell layer of the uterus. C. Is the outer cell layer of the uterus. D. Is the middle smooth muscle layer of the uterus. 5. The epididymis: A. Is comprised of about 100 highly convoluted tubules. B. Primarily produces estrogen. C. Is the major source of fructose in seminal plasma. D. Is responsible for maturation of sperm. 6. One semen characteristic in a normal ejaculate from a boar would include: A. A pH of about 5.7. B. A total sperm content of about 45 billion. C. About 40% of the sperm will be motile. D. A volume of about 5 ml. 7. A function of the external cremaster muscle in the male includes: A. Thermoregulate the testes. B. Transport sperm. C. Store sperm. D. Concentrate sperm. 3 8. The cauda epididymis in a bull promotes long-term storage of sperm because: A. Its temperature is 3 to 5°C higher than the temperature of the testes. B. It maintains a neutral pH (i.e., 7.4) environment. C. It has a low concentration of energy substrates. D. It has a high concentration of oxygen. 9. A cell type located within the germinal epithelium in the male is: A. Thecal cell. B. Sertoli cell. C. Myoid cell. D. Leydig cell. 10. The uterus of the female chicken: A. Connects directly to the infundibulum. B. Is also called the shell gland. C. Is the site of fertilization. D. Connects directly to the cloaca. 11. The ovarian medulla in the cow: A. Is an extension of the broad ligament. B. Contains the germinal epithelium. C. Contains oocytes and follicles. D. Contains the blood supply and nerves. 12. The normal range of percent (%) morphologically NORMAL sperm in a bull’s ejaculate is: A. 5-10% B. 30-40% C. 60-80% D. 85-100% 13. The cervix: A. Produces a hostile (e.g., low pH) environment to reduce sperm survival in the cow. B. Has two cornua to make a bipartite-type of reproductive tract in the ewe. C. Functions as the point of placental attachment in the mare. D. Functions as a copulatory organ in the sow. 14. The average volume of a bull’s ejaculate is about: A. 2 mL B. 5 mL C. 65 mL D. 250 mL 15. A primary follicle: A. Contains an oocyte with one layer of granulosa cells around it. B. Contains an oocyte with two or more layers of granulosa cells around it. C. Contains an oocyte with two or more layers of granulosa cells around it and an antrum. D. Contains an oocyte without granulosa cells. 6 31. The ejaculation time of a stallion is usually less than one second. A. True B. False 32. A bilateral cryptorchid animal has only one testis remaining in the body cavity and is sterile. A. True B. False 33. Capacitation is the biochemical change in sperm making them able to fertilize an oocyte. A. True B. False 34. The isthmus of an adult hen can store sperm for at least 30 days. A. True B. False 35. A pH of about 6.8 makes the vagina bacteriostatic. A. True B. False 36. Pregnancy rates will likely be significantly decreased after a 10 second stimulation (compared to no stimulation) of the clitoris during artificial insemination of mature cows. A. True B. False 37. An “advanced duplex” type of reproductive tract usually has two cervices. A. True B. False 38. The utero-tubal junction is the site of fertilization in the cow. A. True B. False 39. Sperm stored in the ampulla of the bull age rapidly. A. True B. False 40. One of the three functions of the ovary is to mature oocytes. A. True B. False Questions 41 thru 45 are short answer. Your answer should be written concisely and with correct spelling. 41. List three of the seven functions of the uterus (3 points): 1. 2. 3. 7 45. Describe the three functions of progesterone discussed in class (3 points). 1. 2. 3. 43. Define or describe (2 points each; 8 total points): A. Pampiniform Plexus: B. Tertiary follicle: C. Phallus: D. Sertoli cell: 44. Compare and contrast the functions of the male reproductive system in bulls and roosters (4 points): 45. Describe two factors that aid in the transport of sperm from the testis to the caput epididymis (2 points): 1. 2.