Equine Pregnancy And Parturition Flashcards
(64 cards)
How many hours after fertilization does the first MRP occur?
48hrs post fertilization
After how many days post ovulation does the embryo enter the uterus?
6 days post ovulation
What does MRP prevent the production of?
Prostaglandin by the endometrium
MRP involves the movement of _____ around the ______
MRP involves the movement of the embryo around the uterus.
What is secreted by the embryo during MRP?
Anti-luteolysins/luteotrophic substances by the embryo.
Conceptus mobility occurs between day ___ and ____
Conceptus mobility occurs between day 7 and 16
What hormone is essential for the maintenance of pregnancy (called the Pregnancy hormone)?
Progesterone
The inhibition of _____ secretion allows the P____ ____ to persist.
The inhibition of PGF2a secretion allows the Primary CL to persist.
After how many days have the primary and secondary CL disappeared entirely?
210 days
After what period of time does the primary and secondary CL begin to disappear?
160 days
When does the fetoplacental unit begin to secrete progestins?
60-100 + days
What does the fetoplacental unit secrete?
progestins
Additional follicles on both ovaries leads to the formation of……?
Secondary follicle
After how many days do additional follicles develop?
> 35-40 days
From day ____ until day _____ foetal enlargement occurs.
From day 80 until day 250 foetal enlargement occurs.
Where is the precursor for oestrogen produced?
Fetal gonads
Oestrogens are important for uterine ____, uterine ______ and _______
Oestrogens are important for uterine blood supply, uterine hypertrophy and parturition.
When do endometrial cups form?
> day 35-120
What type of cells invade the endometrium during the formation of endometrial cups?
Trophoblast cels
Where do endometrial cups form?
Chorionic girdle
What does eCG stand for?
Equine chorionic gonadotrophin
eCG has ___ like activity.
eCG has LH like activity
eCG peaks at days __-__
eCG peaks at days 50-75
What does eCG assist the formation of?
supplementary CLs
