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Involved in smooth muscle contraction (milk letdown, parturition).

Derived from theca cells. They increase in number (hyperplasia) and contain receptors for LH. They are primarily responsible for P4 production. 4. Comparative Anatomy (Species Differences)

Convert cholesterol into progesterone and then into testosterone under the influence of LH. They are primarily responsible for P4 production

They produce placental lactogen and pregnancy-specific protein B (often used in pregnancy testing). Additional Resources

Below is a summarized study guide based on the core topics covered in this curriculum, including reproductive anatomy, hormone production, and cellular function. 3. Luteal Cells (Post-Ovulation) In ruminants

Lacks seminal vesicles , disseminated prostate , and Cowper’s glands . Cat : Lacks seminal vesicles and a disseminated prostate . 5. Pregnancy Specifics: Giant Binucleate Cells

Take the testosterone produced by theca cells and convert it into estrogen (estradiol) using the aromatase enzyme under the influence of FSH. 3. Luteal Cells (Post-Ovulation) including reproductive anatomy

In ruminants, these cells migrate from the trophoblast to the maternal epithelium: