primordial follicle

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Related to primordial follicle: Graafian follicle, ovulation, zona pellucida, primary oocyte

primordial follicle

An ovarian follicle consisting of the ovum enclosed in a single layer of cells.
See also: follicle


a sac or pouchlike depression or cavity.

atretic follicle
an involuted ovarian follicle.
conjunctival follicle
focal accumulations of hypertrophied lymphoid tissue in conjunctiva, indicative of an inflammatory reaction.
cystic follicle
ovarian follicle that has not ruptured, is grossly enlarged, may be multiple and on both ovaries. Caused by insufficient luteinizing hormone. Affected cows may be nymphomaniac in behavior, but most are anestrous and anovulatory. See also cystic ovarian degeneration.
dental follicle
the structure within the substance of the jaws enclosing a tooth before its eruption; the dental sac and its contents.
dominant follicle
in the ovary, hormones secreted by the largest follicle will cause others to regress.
gastric follicle
lymphoid masses in the gastric mucosa.
graafian follicle
a maturing ovarian follicle among whose cells fluid has begun to accumulate, leading to the formation of a single cavity and leaving the ovum located in the cumulus oophorus; called also vesicular ovarian follicle.
hair follicle
see hair follicle.
hemorrhagic follicle
see corpus hemorrhagicum.
lymph follicle, lymphatic f
1. a small collection of actively proliferating lymphocytes in the cortex of a lymph node.
2. a small collection of lymphoid tissue in the mucous membrane of the gastrointestinal tract; such collections may occur singly (solitary lymphatic follicle) or closely packed together (aggregated lymphatic follicles).
ovarian follicle
the ovum and its encasing cells, at any stage of its development.
primary ovarian follicle
an immature ovarian follicle consisting of an immature ovum and the few specialized epithelial cells surrounding it.
primordial follicle
an ovarian follicle consisting of an ovum enclosed by a single layer of cells.
sebaceous follicle
a hair follicle with a relatively large sebaceous gland, producing a relatively insignificant hair.
solitary follicle
1. areas of concentrated lymphatic tissue in the mucosa of the colon.
2. small lymph follicles scattered throughout the mucosa and submucosa of the small intestine. Called also solitary glands.
thyroid follicle
discrete cystlike units filled with a colloid substance, constituting the lobules of the thyroid gland.
vesicular ovarian follicle
graafian follicle.
wool follicle
site of origin of wool fiber.
References in periodicals archive ?
Difference between the primordial and primary follicles is determined by layers of granulosa cells surrounding oocytes, with one layer in primordial follicles and multiple layers of cuboid granulosa cells in primary follicles.
Control of Primordial Follicle Recruitment by Anti-Mullerian Hormone in the Mouse Ovary 1.
Gosden & Telfer (1987) observed that in some species the number of primordial follicles varied allometrically with both body weight and maximum life expectation, and the difference in the follicular number between species could be a strategy, which guarantees fecundity throughout most of the lifespan.
Durlinger ALL, Gruijters MJG, Kramer P, Karels B, Ingraham HA, Nachtigal MW, Uilenbroek JTJ, Grootegoed JA, Themmen APN (2002) Anti-Mullerian hormone inhibits initiation of primordial follicle growth in the mouse ovary.
2 mg/kg caused the rapid development of primordial follicles and the formation of atresic follicle in a short time, so as no ovarian follicle was visible.
A novel ovarian xenografting model to characterize the impact of chemotherapy agents on human primordial follicle reserve.
The objectives of the present study were to determine the effects of ND on the volume of the ovarian cortex and medulla and the number of primordial follicles and to assess the modulatory effects of gonadotropins on the histopathological changes imposed by ND.
During the last 10-15 years before the onset of menopause, primordial follicle loss is accelerated, which is reflected by a constant decrease in inhibin B levels and increase in follicle-stimulating hormone (FSH) levels.
The quantity and the quality of primordial follicle within ovaries constitute the ovarian reserve (OR).