Theca cells are the endocrine cells associated with ovarian follicles that play an essential role in fertility by producing the androgen substrate required for ovarian estrogen biosynthesis. Theca cells differentiate from the interfollicular stroma in response to proteins secreted from growing follicles.

What are granulosa and theca cells?

The granulosa and theca cells are a site of action for the gonadotropins and a site for production of steroid hormones. The theca cells respond to luteinizing hormone (LH) and produce androgens, as well as progesterone in the pre-ovulatory large follicles (Magoffin, 2005; Wickenheisser et al., 2006).

Are theca cells epithelial?

The theca cell-granulosa cell interaction identified is postulated to be a critical mesenchymal-epithelial cell interaction for the control of ovarian physiology and the endocrine status of the female.

Where are the theca cells?

the ovary
Introduction. Theca cells are endocrine cells located exclusively in the ovary (Erickson, Magoffin, Dyer, & Hofeditz, 1985). The follicle is the basic functional unit of the ovary, containing a single oocyte and granulosa cells enclosed by a basal lamina.

Where are theca cells present?

Theca cells are a group of endocrine cells in the ovary made up of connective tissue surrounding the follicle. They have many diverse functions, including folliculogenesis.

Where are the theca cells from the mechanism of theca cells derivation and differentiation?

Theca cells form in the secondary follicles, maintaining follicular structural integrity and secreting steroid hormones. Two main sources of theca cells exist: Wilms tumor 1 positive (Wt1+) cells native to the ovary and Gli1+ mesenchymal cells migrated from the mesonephros.

Where are theca cells located?

What type of cells are involved in the nervous system?

Neurons are the primary type of cell that most anyone associates with the nervous system. They are responsible for the computation and communication that the nervous system provides. They are electrically active and release chemical signals to target cells. Glial cells, or glia, are known to play a supporting role for nervous tissue.

What type of tissue is nervous tissue composed of?

Visit this site to learn about how nervous tissue is composed of neurons and glial cells. Neurons are dynamic cells with the ability to make a vast number of connections, to respond incredibly quickly to stimuli, and to initiate movements on the basis of those stimuli.

What is the function of glial cells in the nervous system?

They are electrically active and release chemical signals to target cells. Glial cells, or glia, are known to play a supporting role for nervous tissue. Ongoing research pursues an expanded role that glial cells might play in signaling, but neurons are still considered the basis of this function.

Why are unipolar neurons always found in ganglia?

First, their dendrites are receiving sensory information, sometimes directly from the stimulus itself. Secondly, the cell bodies of unipolar neurons are always found in ganglia.