M1-C1-L56 --> Definitions
Terms
undefined, object
copy deck
- Oogonia
- Once primordial germ cells have arrived in the gonad of the female and become differentiated.
- Follicular cells
- Flat epithelial cells orginating from surface epithelium covering the ovary.
- Primary oocytes
- Differentiated from oogonia via mitosis, arrested in cell division of Prophase of meiosis I.
- Primordial follicle
- A primary oocyte together with its surrounding epithelial cells.
- Diplotene stage
- A resting stage during prophase characterized by a lacy network of chromatin
- Oocyte Maturation Inhibition (OMI)
- Small peptide secreted by follicular cells producing the arrested stage in Prophase of meiosis I.
- Three stages of maturation experienced by primary follicles.
-
1.) Primary or Pre-antral
2.) Secondary or antral
3.) Pre-ovulatory - Which stage of maturation of primary follicles is the longest?
- pre-ovulatory
- Granulosa cells
- Differentiated from flat follicle cellsa to a stratified cuboidal epithelium.
- Primary Follicle
- When primordial follicles develop granulosa cells.
- Theca folliculi
- Stromal cells surrounding the granulosa
- Zona pellucida
- Layer of glycoproeins on the surface of the oocyte.
- What secretes the zona pellucida?
- Both granulosa cells and the oocyte.
- Theca interna
- Inner layer differentiated from theca folliculi that are SECRETORY cells.
- Theca externa
- Outer layer differentiated from theca folliculi that are FIBROUS cells.
- Antrum
- coalescence of fluid filled spaces between granulosa cells.
- Secondary (vesicular) follicle
- Term for follicle once antrum is created
- Cumulus oophorus
- Granulosa cells surrounding the oocyte
- What induces the pre-ovulatory growth phase?
- Luteininzing hormones
- After meiosis I, what is the result?
- One secondary oocyte and first polar body.
- What type of cells are locked into the prophase stage of meiosis I
- primordial follicles