TOPIC 3 (GESTATION) Flashcards
T/F: In males, FSH STIMULATES the pdtn of sperm w/n the seminiferous tubules.
T
T/F: As in dogs, maternal recognition of pregnancy in cats DOES NOT involve prevention of luteolysis caused by uterine luteolysin
T
T/F: Progesterone has a quieting influence on the uterus
T
T/F: Conception rate in cows is best when inseminated about 30 hours from beginning of estrus
F
T/F: coital contact apparently brings forth LH surge in cats
T
the optimum time of service for sows is 12-30 hours after onset of estrus T/F
T
ovarian artery and uterine vein is adhered together = important for diffusion of
PGf2a
persistence of the luteal tissue (CL) means that there is an elevation of this hormone.
progesterone
The elevation of the hormone (progesterone) is a result of ____ feedback of the hypothalamus and APG inhibiting follicular devt, ovulation and preventing return to estrus
negative
progesterone has a quieting influence T/F
T
hormone produced by endometrium and its fxn
prostaglandin; regress CL and allow animal to estrus
placentation occurs 2 to 5 weeks after fertilization T/F
F - implantation dapat
involved with secretion of anterior pituitary hormone.
Hypophysioportal circulation
T/F: the maternal recognition of pregnancy is when maternal endocrine response can be detected AFTER the blastocyst is attached in the endometrium by microvillis.
F - before dapat
what does FSH stimulates?
granulosa cells
2 hormones the ovary secretes?
estrogen and progesterone
the seminiferous tubules release FSH and LH for what purpose? (2)
sperm and testosterone pdtn
what is the onset of puberty for bitch and sow?
6-24 and 3-7 months
The time of puberty coincide in the time of mating T/F
F- don’t coincide dapat
the ewe and bitch’s age first service is 14-22 months T/F
F - 12-18months dapat
Cats need coitus for LH surge as they are spontaneous ovulators t/f
F - NOT sponty oovu
The mare’s length of estrus is 21 days while its estrous cycle is 5 days (average) T/F
F - baliktad. 21 ang cycle, 5 ang length
How many days/hours is the best time to inseminate cows?
a.2-3 days after onset of estrus
b. 10hrs after the onset of estrus
c. 3-4 days before end of estrus
d. 18-24 hours after onset of estrus
B
A - bitch
C - Mare
D - Ewe
Match each species with its corresponding gestation period (Average)
1. Bitch 2. Ewe 3. Sow 4. Cow 5. Mare
A. 282 B. 114 C. 63 D. 150 E. 336
4A, 3B, 1C, 2D, 5E
gestation begins with IMPLANTATION and ends with PARTURITION T/F
F - fertilization dapat
how many days does the zygote stay in the uterine tube?
3-4 days
Ecg produces/is used for the following EXCEPT
a. produced by the endometrial cups
b. prevention of luteolysis by uterine-derived prostaglandins
c. helps form new follicles
d. used for diagnosing pregnancy
B - Bovine trophoblast protein (bTP-1)/ bovine tau interferon
(bIFN- tau)
Ovine trophoblast protein (oTP-1)/ ovine tau interferon (oIFN- tau) enhances PGF2αsecretion and alters PGE2 production T/F
F - baliktad. enhances PGE2, alter PGF2aplha dapat
In pigs, estradiol 17-B is produced at day 10 for maintenance of pregnancy T/F
F - 2 weeks dapat. 10 days ang sheep
in mares, the luteal phase exceeds that of pregnancy T/F
F - dogs and cats
encroachment or the thickening of the endometrium, occurs in sows. T/F
F - mare
rectal palpation is performed during the early signs of pregnancy T/F
T
radiography is done in dogs __ days into pregnancy
45
Ballottement is the most used method in diagnosing pregnancy T/F
F - ultrasound
