Hormone, adrenal cortex pregnancy

The production of progesterone and oestrogen is important for the first 9-10 weeks of pregnancy. After this, the placenta and also the adrenal cortex of the foetus gradually take over the production of these hormones. 

CAS 57-83-0. C2II I, ),. The female sex hormone secreted in the body by the corpus luteum, adrenal cortex, or placenta during pregnancy. It is important in the preparation of the uterus for pregnancy and for the maintenance of pregnancy. It exists in two crystalline forms (a- and (i ) of equal physiological activity. Progesterone is believed to be the precursor of the adrenal steroid hormones. 

The next step in increasing complexity of structure is the hormone of pregnancy, progesterone (5), and the hormones of the adrenal cortex, corticosteroids, as an example of which cortisone (6) may be mentioned. 

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