Corona Radiata
The outermost, protective coat of an unfertilized egg of a female is called corona radiata. This egg cell is stored within a follicle in the ovary. These follicular cells secrete this outer layer. It is quite thick and many of the sperms release hyaluronidase to break and penetrate it in order to reach the zona pellucida, which is the layer next to it. It keeps adhering to the zona pellucida even after the ovulation (release of the egg from the follicle) so that no more than one sperm can reach the ovum.
read more Bladder Seminal VesiclesProstate Gland Vas DeferensEpididymis Glans Penis
Corpus Cavernosum Urethral Opening ScrotumLabium MajoraLabium Minora UrethraClitoris Pubic bone Vagina Urinary Bladder
Cervix Uterus Ovary Rectum Ureter Fallopian Tube Axoneme Basal BodyNucleus Acrosome Sperm Testicle Endpiece Corona RadiataZona Pellucida Egg CytoplasmFirst Polar BodyOvum Mitochondria
