VGO-0207
QUESTION
Ovulation fossa is found in the ovary of?
OPTIONS
(A) Cow
(B) Hen
(C) Bitch
(D) Mare
ANSWER
(D) Mare
EXPLANATION
The mare has a specialized ovulation fossa through which follicles release their oocytes, reflecting the unusual organization of the equine ovary. Cows and bitches ovulate from the ovarian surface without this restricted site. Hens have a different ovarian organization and ovulate from large individual follicles. The equine ovulation fossa therefore distinguishes the mare from the other listed animals.
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Veterinary Gynaecology and Obstetrics · 240 Questions
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