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Follicles - Anatomy & Physiology (view source)
Revision as of 12:44, 9 September 2008
, 12:44, 9 September 2008→Follicular Development
*Smallest and most immature follicle
*Smallest and most immature follicle
*Oocyte surrounded by a Single layer of squamous cells
*Oocyte surrounded by a Single layer of squamous cells
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=== '''Primary Follicle''' ===
=== '''Primary Follicle''' ===
*Oocyte surrounded by a single layer of follicular cuboidal cells.
*Oocyte surrounded by a single layer of follicular cuboidal cells.
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=== '''Secondary Follicles''' ===
=== '''Secondary Follicles''' ===
*The oocyte had developed a thick translucent glycoprotein layer called the Zona Pellucida.
*The oocyte had developed a thick translucent glycoprotein layer called the Zona Pellucida.
*Oocyte surrounded by two or more layers of follicular cuboidal cells. These cells differenciate into the inner Granulosa cells and outer Theca cells.
*Oocyte surrounded by two or more layers of follicular cuboidal cells. These cells differenciate into the inner Granulosa cells and outer Theca cells.
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=== '''Tertiary/Antral Follicles''' ===
=== '''Tertiary/Antral Follicles''' ===
*Theca Cell layer becomes vascularised.
*Theca Cell layer becomes vascularised.
*Granulosa cells become responsive to Follicle Stimulating Hormone (FSH) and start producing [[Endocrine_System_-_Ovaries_-_Anatomy_%26_Physiology|17β-Oestrodiol]] and small amounts of Inhibin and Progesterone.
*Granulosa cells become responsive to Follicle Stimulating Hormone (FSH) and start producing [[Endocrine_System_-_Ovaries_-_Anatomy_%26_Physiology|17β-Oestrodiol]] and small amounts of Inhibin and Progesterone.
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=== '''Dominant Follicle''' ===
=== '''Dominant Follicle''' ===