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Examining what different species lack in their reproductive tracts is a common exam focus: Does not have an Ampulla .

This theory explains how estrogen is synthesized in the follicle via the cooperation of two distinct cell types: Examining what different species lack in their reproductive

Maintains pregnancy; produced by large and small luteal cells. Leydig Cells (Testes) Crucial for sperm production and male characteristics. Oxytocin Large Luteal Cells / Hypothalamus Oxytocin Large Luteal Cells / Hypothalamus Derived from

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) the follicle transforms into the

Below is a summarized study guide based on the core topics covered in this curriculum, including reproductive anatomy, hormone production, and cellular function.

Convert cholesterol into progesterone and then into testosterone under the influence of LH.

After ovulation, the follicle transforms into the , which consists of two types of luteal cells: