Zona Fasciculata - ț̢
The wide middle zone of the adrenal cortex. This zone produces a series of enzymes that convert PREGNENOLONE to cortisol (HYDROCORTISONE) via 17-ALPHA-HYDROXYPROGESTERONE.
Synonyms : Fasciculata, Adrenal, Fasciculata, Zona
Zona Glomerulosa - ț̢
The narrow subcapsular outer zone of the adrenal cortex. This zone produces a series of enzymes that convert PREGNENOLONE to ALDOSTERONE. The final steps involve three successive oxidations by ALDOSTERONE SYNTHASE.
Synonyms : Glomerulosa, Adrenal, Glomerulosa, Zona
Zona Pellucida - ț̢
A tough transparent membrane surrounding the OVUM. It is penetrated by the sperm during FERTILIZATION.
Synonyms :
Zona Reticularis - ț̢
The inner zone of the adrenal cortex. This zone produces the enzymes that convert PREGNENOLONE, a 21-carbon steroid, to 19-carbon steroids (DEHYDROEPIANDROSTERONE; and ANDROSTENEDIONE) via 17-ALPHA-HYDROXYPREGNENOLONE.
Synonyms : Reticularis, Adrenal, Reticularis, Zona