Veterinary Pharmacology & Toxicology MCQ s 50 Score: 0 Attempted: 0/50 Subscribe 1. The term āgestationā refers to: (A) Act of mating (B) Period of pregnancy (C) Act of parturition (D) Lactation period 2. Average gestation period of a cow is: (A) 240 days (B) 280 days (C) 300 days (D) 330 days 3. Which hormone is responsible for milk letdown? (A) Estrogen (B) Oxytocin (C) Progesterone (D) Prolactin 4. The process of expulsion of the fetus is called: (A) Ovulation (B) Fertilization (C) Parturition (D) Implantation 5. Dystocia refers to: (A) Normal birth (B) Difficult birth (C) Multiple births (D) Premature birth 6. The normal presentation of a fetus at birth in cattle is: (A) Anterior longitudinal (B) Posterior longitudinal (C) Transverse (D) Oblique 7. Retained placenta in cows is defined as retention beyond: (A) 2 hours (B) 6 hours (C) 12 hours (D) 24 hours 8. Which hormone maintains pregnancy in mammals? (A) Estrogen (B) Prolactin (C) Progesterone (D) Relaxin 9. The term āmetritisā refers to inflammation of: (A) Ovaries (B) Cervix (C) Uterus (D) Vagina 10. Which is the best time for artificial insemination in cows? (A) At the start of estrus (B) At the end of estrus (C) Mid-estrus (D) 24 hours after estrus 11. Freemartin is a condition commonly found in: (A) Goats (B) Pigs (C) Cattle (D) Horses 12. In which animal is ovulation spontaneous? (A) Cat (B) Rabbit (C) Cow (D) Camel 13. Relaxin hormone mainly affects: (A) Ovarian follicles (B) Pelvic ligaments (C) Mammary glands (D) Placenta 14. Pyometra refers to: (A) Inflammation of the vagina (B) Accumulation of pus in the uterus (C) Blockage of the cervix (D) Infection of the oviducts 15. The process of egg release from the ovary is called: (A) Fertilization (B) Ovulation (C) Implantation (D) Estrus 16. Which structure connects the fetus to the placenta? (A) Umbilical cord (B) Amniotic sac (C) Allantois (D) Chorion 17. The act of giving birth in horses is known as: (A) Farrowing (B) Foaling (C) Lambing (D) Kindling 18. A cow with repeated breeding but no conception is called: (A) Barren cow (B) Repeat breeder (C) Non-lactating cow (D) Dry cow 19. Colostrum is rich in: (A) Fats (B) Antibodies (C) Fiber (D) Minerals only 20. Which hormone induces parturition? (A) Progesterone (B) Prostaglandin F2α (C) Estrogen (D) LH 21. Superovulation is induced by: (A) Oxytocin (B) FSH (C) LH (D) Prolactin 22. Lochia refers to: (A) Milk secretion after birth (B) Uterine discharge after parturition (C) Placental expulsion (D) Fetal membranes 23. The fetal membrane that directly surrounds the fetus is: (A) Chorion (B) Allantois (C) Amnion (D) Yolk sac 24. Cryptorchidism refers to: (A) Absence of testes (B) Retained testes in the abdomen (C) Castrated animal (D) Infertile female 25. The term ānidationā is another name for: (A) Ovulation (B) Fertilization (C) Implantation (D) Parturition 26. Prolapse of the uterus commonly occurs: (A) Before parturition (B) During estrus (C) After parturition (D) During gestation 27. Estrous cycle length in cows is approximately: (A) 12 days (B) 21 days (C) 28 days (D) 35 days 28. What is the act of parturition in swine called? (A) Lambing (B) Farrowing (C) Kidding (D) Kindling 29. Which is a sign of estrus in cows? (A) Sitting quietly (B) Frequent urination (C) Standing to be mounted (D) Decreased appetite 30. Which hormone is used for estrus synchronization? (A) Oxytocin (B) Progesterone (C) Estrogen (D) Prolactin 31. The term āanechoicā in ultrasonography indicates: (A) High echo (B) Low echo (C) No echo (fluid-filled) (D) Bone structure 32. What is the gestation period of sheep? (A) 120 days (B) 150 days (C) 180 days (D) 210 days 33. Which part of the placenta is maternal in origin? (A) Amnion (B) Chorion (C) Cotyledons (D) Caruncles 34. Endometritis is the inflammation of: (A) Inner lining of the uterus (B) Cervix (C) Oviducts (D) Placenta 35. A non-pregnant female showing signs of pregnancy is suffering from: (A) True pregnancy (B) Pseudopregnancy (C) Superfetation (D) Abortion 36. The average gestation period of a mare is: (A) 280 days (B) 300 days (C) 330 days (D) 360 days 37. Which condition involves the accumulation of fluid in the uterus? (A) Hydrometra (B) Pyometra (C) Metritis (D) Endometritis 38. What is the function of corpus luteum? (A) Estrogen secretion (B) Progesterone secretion (C) LH secretion (D) FSH secretion 39. Ovulation in cats is: (A) Spontaneous (B) Induced (C) Continuous (D) Absent 40. The term āplacentomeā refers to: (A) Union of caruncle and cotyledon (B) Entire placenta (C) Amniotic cavity (D) Umbilical attachment 41. Which species has a diffuse type of placenta? (A) Cow (B) Horse (C) Dog (D) Sheep 42. Which condition refers to premature expulsion of the fetus? (A) Abortion (B) Stillbirth (C) Retention (D) Prolapse 43. The hormone responsible for inducing estrus behavior is: (A) Estrogen (B) Progesterone (C) Oxytocin (D) Relaxin 44. Which structure produces follicle-stimulating hormone? (A) Ovaries (B) Hypothalamus (C) Pituitary gland (D) Uterus 45. The act of parturition in goats is called: (A) Foaling (B) Kidding (C) Lambing (D) Kindling 46. The term āsuperfetationā means: (A) Fertilization of two ova at different cycles (B) Fertilization by two males (C) Fertilization after parturition (D) Failure of fertilization 47. Retention of fetal membranes may cause: (A) Metritis (B) Mastitis (C) Ketosis (D) All of the above 48. Which species exhibits induced ovulation? (A) Horse (B) Cow (C) Camel (D) Buffalo 49. The first milk after parturition is called: (A) Foremilk (B) Colostrum (C) Transitional milk (D) Mature milk 50. Which method is used for pregnancy diagnosis in early cows? (A) Ultrasonography (B) Rectal palpation (C) Progesterone assay (D) All of the above