Ovarian cycle,computer artwork. Once sexual maturity is reached up to 20 oocytes start developing into eggs (ovums) every menstrual cycle. Only one will reach full maturity as a Graafian follicle (right) and release its egg at ovulation (bottom right). The follicle then develops into a corpus luteum (yellow),which secretes progesterone to build up the lining of the uterus,ready for a fertilised egg. If there is no fertilised egg after 12 days it stops secreting and degenerates into a corpus albicans (left) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Dalhoff, Henning |
Taille de l’image : | 4271 px × 2466 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |