Corpus Luteum

After ovulation, granulosa cells remaining in the wall of the ruptured follicle, together with cells from the theca interna, are vascularized by surrounding vessels. Under the influence of LH, these cells develop a yellowish pigment and change into lutean cells, which form the corpus luteum and secrete the hormone progesterone (Fig. 2.2C). Progesterone, together with estrogenic hormones, causes the uterine mucosa to enter the progestational or secretory stage in preparation for implantation of the embryo.

Figure 2.3 A. Scanning electron micrograph of ovulation in the mouse. The surface of the oocyte is covered by the zona pellucida. The cumulus oophorus is composed of granulosa cells. B. Scanning electron micrograph of a rabbit oocyte 1.5 hours after ovulation. The oocyte, which is surrounded by granulosa cells, lies on the surface of the ovary. Note the site of ovulation.

Corpus Luteum Scan
Figure 2.4 Relation of fimbriae and ovary. Fimbriae collect the oocyte and sweep it into the uterine tube.
Hair Loss Prevention

Hair Loss Prevention

The best start to preventing hair loss is understanding the basics of hair what it is, how it grows, what system malfunctions can cause it to stop growing. And this ebook will cover the bases for you. Note that the contents here are not presented from a medical practitioner, and that any and all dietary and medical planning should be made under the guidance of your own medical and health practitioners. This content only presents overviews of hair loss prevention research for educational purposes and does not replace medical advice from a professional physician.

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