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WorksheetsEquine Repro
Total questions: 24
Worksheet time: 13mins
What is the exterior opening of the mare’s reproductive tract?
Vulva
Vagina
Cervix
Urethra
Which small tube changes consistency throughout the estrous cycle and protects the uterus from contaminants?
Infundibulum
Vagina
Cervix
Corpus luteum
The _____ shaped uterus is suspended in the abdomen by the ______ ligament.
T, broad
Y, broad
U, connecting
Y, connecting
The oviduct connects the…
Cervix to vagina
Infundibulum to broad ligament
Ovary to cervix
Ovary to uterus
Where does fertilization occur?
Epididymis
Oviduct
Uterus
Ovary
What is the average estrous cycle length in the mare?
240 days
21 days
27 days
233 days
After ovulation, the follicle forms a _____ that produces_____
Corpus luteum (CL), progesterone
Corpus luteum (CL), estrogen
Ampulla, progesterone
Follicular cyst, estrogen
How many follicles ideally ovulate in the mare?
(a)
During which phase is the mare receptive to the stallion?
Estrous
Diestrous
Anestrous
Polyestrous
Which hormone is dominant in diestrous?
Progesterone
Prostaglandin
FSH
Estrogen
During what phase can the mare get pregnant?
Diestrous
Polyestrous
Estrous
Anestrous
Where is the hypothalamus located?
Brain
Adrenal gland
Spinal cord
Pituitary gland
The anterior pituitary produces …
Gonadotropin-releasing hormone
LH and FSH
Prostaglandin F2a
Testosterone
____ stimulates follicle growth, while ____ triggers ovulation
Progesterone, FSH
Prostaglandin, FSH
FSH, LH
LH, FSH
Which hormone is produced by the uterus and tells the brain the mare is not pregnant
Prostaglandin F2a
GnRH
Progesterone
LH
During what part of the year do mares naturally go through estrous cycles?
Winter - when days are short
During longer daylight portion of the year
All year long
During months with 31 days
What do mare owners do to increase the likelihood of an early January birthdate?
Decrease barn light in August/September
Warm the barn in December/January
Artificially light mares on Dec/January
Give progesterone injections
Sperm is usually viable in the mare for ___ hours, while an ovulated oocyte (egg) is viable for ____ hours
48 hrs, 12-24 hours
12-24 hours, 48 hours
36 hrs, 48 hours
6 hours, 12 hours
Ideally you want to breed as close to ____ as possible
The full moon
Sperm production
Follicular growth
Ovulation
Which hormone is ecbolic and what does ecbolic mean?
Oxytocin, causes uterine contraction
Oxytocin, causes ovulation
Prostaglandin, Lyses CL
Prostaglandin, causes uterine contractions
How long after the CL is formed can you give prostaglandins (lutalyse/estrumate) to destroy the CL and short cycle?
Immediately
5-7 days
2-3 days
Prostaglandins don’t do this
What do we give HCG or deslorelin for?
To induce ovulation
To end a pregnancy
To maintain a pregnancy
To increase number of follicles growing
Progesterone medications (regumate) are used to
End pregnancy
Maintain pregnancy
Cause uterine contractions
Stimulate the placenta
In pregnancy, what takes over progesterone production at 60-90 days after fertilization?
Corpus luteum (CL)
Ovary
Pituitary gland
Placenta
