Question

A primary follicle consists of a primary oocyte surrounded by:

Options

• A fluid-filled cavity called the antrum

• A single layer of granulosa cells

• Multiple layers of granulosa cells and theca layer

• Theca interna and theca externa only

Answer 1

Each primary oocyte becomes surrounded by a single layer of granulosa cells. Together, the primary oocyte and this layer form a primary follicle.