Aminoethoxy-vinylglycine (AVG) and aminooxyacetic acid (AOA) block the conversion of AdoMet to ACC.

AVG and AOA are known to inhibit enzymes that use the cofactor pyridoxal phosphate. The cobalt ion (Co2+) is also an inhibitor of the ethylene biosynthetic pathway, blocking the conversion of ACC to ethylene by ACC oxidase, the last step in ethylene biosynthesis

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#Id: 6604

#Unit 7. System Physiology – Animal

Theca cells synthesize and secrete progesterone.

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#Id: 6605

#Unit 7. System Physiology – Animal

Three estrogens are present in the plasma of the human female: 

1β-estradiol

 Estrone

Estriol

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#Id: 6606

#Unit 7. System Physiology – Animal

The principal estrogen secreted by the ovaries is β-estradiol

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#Id: 6607

#Unit 7. System Physiology – Animal

Estrogens inhibit osteoclastic activity in the bones and therefore stimulate bone growth.

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#Id: 6608

#Unit 7. System Physiology – Animal

During female reproductive cycle, Estrogen stimulate rapid proliferation of the stromal cells and the epithelial cells of endometrium, before ovulation.

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#Id: 6609

#Unit 7. System Physiology – Animal

Progesterone promote secretory changes in the uterine endometrium, after ovulation