VGO-0109
QUESTION
Theca cells are stimulated by?
OPTIONS
(A) LH
(B) FSH
(C) Prolactin
(D) Estradiol
ANSWER
(A) LH
EXPLANATION
LH stimulates ovarian theca interna cells to synthesize androgens. These androgens pass to granulosa cells, where FSH-supported aromatase converts them to estrogens. Prolactin is not the principal gonadotropin acting on theca cells, and estradiol is a steroid product and regulator rather than the primary stimulating pituitary hormone. This relationship is the basis of the two-cell, two-gonadotropin model.
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Veterinary Gynaecology and Obstetrics · 240 Questions
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