ANSC 3401 Quizzes Questions and Complete Solutions

ANSC 3401 Quizzes Questions and Complete Solutions Freemartins are females whose reproductive tracts do not form correctly due to their exposure to estrogen in the mother's uterus. - Correct Ans: False (androgen) Estrus synchronization is primarily as a means for rapidly spreading female genetics. - Correct Ans: False (it says other on GRL) The collective name procedures where humans intervene in the natural reproductive processes for the purpose of increased animal production or the treatment of human infertility is termed: - Correct Ans: Assisted Reproductive Technologies Which of the following species has the shortest estrous cycle? - Correct Ans: Ovine (16-17 days) Artificial insemination is the oldest ART technique; it has been used commercially since - Correct Ans: mid 1900's Which anterior pituitary hormone is directly and selectively turned off by inhibin? - Correct Ans: Follicle Stimulating Hormone The sugar content of the gonadotropin will determine their half-life - Correct Ans: True Which of the following is termed a gonadotropin? - Correct Ans: FSH, can also be LH or hCG While not a reproductive hormone, cortisol can have positive or negative effects on reproduction depending on its concentration. - Correct Ans: true Which of the following are made by the ovary when it is forming a follicle. - Correct Ans: All of the above (Progestins, Androgens, and Estrogens) Rising progesterone levels stop the release of LH, this would be an example of - Correct Ans: Negative Feedback To be a neurohormone, a hormone must - Correct Ans: be made by nerve cells Melatonin will always increase as photoperiod decreases (more hours of darkness) - Correct Ans: True Which of the following are stored in the posterior pituitary and helps regulate milk letdown. - Correct Ans: Oxytocin Neurohormones must be made by nerve cells - Correct Ans: True The opening between the cervix and the vagina is the os vagina - Correct Ans: False (os cervix) Which is the most mature follicle? - Correct Ans: Graaffian Which of the following has a lower than normal body pH? - Correct Ans: Vagina Which of the following would be the organ of copulation in the female? - Correct Ans: Vagina Sperm can remain functional in the vaginal vault for only a few hours. - Correct Ans: True Which hormone rises in both males and females just before puberty? - Correct Ans: Luteinizing Hormone Average age of porcine puberty - Correct Ans: 3-7 months Average age of ovine puberty - Correct Ans: 5-9 months Quality of nutrients will play an important role in the onset of puberty - Correct Ans: True Sexual maturity in males would be defined as maximum sperm output - Correct Ans: True An unmated short cycle animal will not have this phase of estrous cycle? - Correct Ans: Diestrus In primates, menstrual bleeding occurs at the time of CL regression (dying) - Correct Ans: True Both "foal heat" and postpartum ovulation in sows are usually fertile - Correct Ans: False What kind of estrous cycle do horses have? - Correct Ans: seasonally polyestrous