(oogenesis), one of the oogonia develops into primary oocytes. Every oocyte undergoes two meiotic cell divisions before becoming a mature ovum. The primary follicle now is called a secondary follicle and it remains growing inside the multiple layers of the follicle. ...
For example, the first thyroid follicle develops from the ventral midline epithelium of the pharynx at around 60 hpf37 and the thymus appears at 54 hpf38, i.e. right after the midline krt4+ cells have covered the endoderm. Likewise, whether the midline krt4+ cells exchange signals with ...
Related to primary ovarian follicle:primordial ovarian follicle,Vesicular ovarian follicles fol·li·cle (fŏl′ĭ-kəl) n. 1.Anatomy a.A small bodily cavity or sac. b.A crypt or minute cul-de-sac or lacuna, such as the depression in the skin from which the hair emerges. ...
Related to primary ovarian follicles:secondary follicle fol·li·cle (fŏl′ĭ-kəl) n. 1.Anatomy a.A small bodily cavity or sac. b.A crypt or minute cul-de-sac or lacuna, such as the depression in the skin from which the hair emerges. ...
the primary ie basic the primary drying an the primary grades the primordial qi is the prince of tennis the prince of tides the prince unfortunat the princes cactus the princess of wales the princesss messeng the princess billy an the principal enemy the principal thing i the principium stud...
Ova in the primordial follicle are arrested prophase I of meiosis I. The primordial follicles maintain a dormant state until activated by signals from the pituitary gland to start the process of follicle development. Primary Follicle Stage Upon the beginning of the menstrual cycle, the hypothalamus ...
State true or false. Primary follicles contain granulosa cells that produce estrogen and progesterone. After ovulation, the follicle develops into the corpus albicans. True or false? The ovarian follicles which produce the ovum is located in the medulla of the ovary. A) True. B) ...
The follicular cavity develops as a split between the follicular cells at one side of the follicle. In the mature follicle the cavity is broad and contains liquor folliculi. The theca interna and externa are not distinguishable until the follicle is highly cellular. 展开 ...
Although the concentration of melatonin increases with the diameter of the follicle, the ability of the sheep COC itself to synthesize melatonin as the follicle develops is still unclear. Thus, we investigated the expression patterns of AANAT and HIOMT mRNA and protein in sheep COCs in follicles...
In contrast, the greatest differences in both transcript and protein expression in the fetal ovary were observed when EC exposure occurred from around mid-gestation (Figs 3 and 4), coin- ciding with processes of oocyte meiosis through to primary follicle differentiation, leading onto antral-...