ANSC 4045- Final: Moodle Quizzes for New Material

in dairy cows, the period of uterine involution might be compromised as a consequence of removing the calf from the dam. This results in reduced suckling frequency, thus less oxytocin is released to induce myometrial contractions.

- true

in the sow, maternal recognition of pregnancy results from the secretion of estradiol by the blastocyst which causes the redirection of PGF2alpha towards the uterine lumen where it is degraded:

- true

the development of the mammary glands is characterized by isometric growth from birth to puberty and allometric growth from puberty to pregnancy:

- true

in the __________, the free floating blastocyst produces a specific protein referred to as __________. This protein will inhibit the synthesis of oxytocin receptors by endometrial cells reducing _________ production and secretion.

- cow - bIFNt - PGF2alpha

the female cat enters ___________ every 17 days. If ovulation does not occur, ________ begins a few days later. Ovulation is the result of the stimulus: __________. This is why female cats are considered to be ______________.

- estrus - proestrus - copulation - induced ovulators

in the mare, maternal recognition of pregnancy results from the movement of the conceptus around the uterus between days 10 to 12:

- false

the semen sexing technique is based on the principle that the X chromosome contains more DNA than the Y chromosome. Therefore, a spermatozoon containing the Y chromosome will be smaller.

- false

match the words and definitions: - fetal contribution to the placenta: - series of events by which the conceptus signals its presence and enable pregnancy to continue: - unique transitory structures that develop in the pregnancy mare between day 35 and 60: - LH like hormone that acts on the CL to inhibit intraovarian luteolysis:

- fetal contribution to the placenta: allantochorion - series of events by which the conceptus signals its presence and enable pregnancy to continue: maternal recognition of pregnancy - unique transitory structures that develop in the pregnancy mare between day 35 and 60: endometrial cups - LH like hormone that acts on the CL to inhibit intraovarian luteolysis: human chorionic gonadotropin

fill in the table with the right answer. MPR- maternal pregnancy recognition: Porcine - interval from ovulation to MPR: - interval from ovulation to initial uterine attachment: - type of placentation: - length of gestation:

- interval from ovulation to MPR: 11 to 12 days - interval from ovulation to initial uterine attachment: 14 to 18 days - type of placentation: diffuse epitheliochorial - length of gestation: 3.8 months

fill in the table with the right answer. MPR- maternal pregnancy recognition: Equine - interval from ovulation to MPR: - interval from ovulation to initial uterine attachment: - type of placentation: - length of gestation:

- interval from ovulation to MPR: 12 to 14 days - interval from ovulation to initial uterine attachment: 36 to 38 days - type of placentation: diffuse epitheliochorial - length of gestation: 11 months

fill in the table with the right answer. MPR- maternal pregnancy recognition: Ovine - interval from ovulation to MPR: - interval from ovulation to initial uterine attachment: - type of placentation: - length of gestation:

- interval from ovulation to MPR: 13 to 14 days - interval from ovulation to initial uterine attachment: 18 days - type of placentation: Cotyledonary epitheliochorial - length of gestation: 5 months

fill in the table with the right answer. MPR- maternal pregnancy recognition: Human - interval from ovulation to MPR: - interval from ovulation to initial uterine attachment: - type of placentation: - length of gestation:

- interval from ovulation to MPR: 7 to 12 days - interval from ovulation to initial uterine attachment: 2 days - type of placentation: discoid hemochorial - length of gestation: 9 months

in the bitch (female dog), the blood-tinged discharge through the vulva is caused by:

- lochia

match the assisted reproductive technique most likely to be used for each purpose: - non surgical, in vivo oocyte recovery: - maturation of oocytes from the germinal vesicle stage to the metaphase II stage: - increase the number of offspring from a female, while keeping the animals in competition:

- non surgical, in vivo oocyte recovery: transvaginal ultrasound guided aspiration - maturation of oocytes from the germinal vesicle stage to the metaphase II stage: in vivo maturation - increase the number of offspring from a female, while keeping the animals in competition: embryo transfer

match words and definitions: - period after parturition when the reproductive tract returns to normal: - first form of milk produced by the mammary gland after parturition:

- period after parturition when the reproductive tract returns to normal: uterine involution - first form of milk produced by the mammary gland after parturition: colostrum

steroidal contraception methods aim to __________ by using ___________. These methods also contain small amounts of _____________ to promote normal reproductive tract functions.

- prolong the luteal phase - progestins - estrogen

in the human female, menses is brought about by the vasoconstriction of __________ in the endometrium. This is caused by an increased secretion of _____________ in the uterus that results from the dramatic drop in ____________.

- spiral arteries - PGF2alpha - progesterone

for the horse in vitro fertilization does not work as well as it does in cattle. The following techniques have been proposed as alternatives. Choose the appropriate name or acronym for these: - surgically transfer oocytes into the oviduct of a previously inseminated mare: - injection of a single spermatozoon into the oocyte through micromanipulation:

- surgically transfer oocytes into the oviduct of a previously inseminated mare: GIFT - injection of a single spermatozoon into the oocyte through micromanipulation: ICSI