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Reproductive Hormones Overview - Anatomy & Physiology (view source)
Revision as of 21:29, 7 October 2011
, 21:29, 7 October 2011→Human Chorionic Gonadotrophin (hCG)
===Human Chorionic Gonadotrophin (hCG)===
===Human Chorionic Gonadotrophin (hCG)===
hCG is a form of glycoprotein that is synthesised within the trophoblast cells of a [[Blastocyst_Embryonic_Development_-_Anatomy_%26_Physiology|blastocyst]]. In females the target tissue is the ovary where it results in the ovarian production of progesterone. In males hCG increases the growth of the foetal testes.
hCG is a form of glycoprotein that is synthesised within the trophoblast cells of a [[Blastocyst_Embryonic_Development_-_Anatomy_%26_Physiology|blastocyst]]. hCG is particularly important in primate reproduction where it has a similar effect to LH in stimulating the continued production of progesterone and oestrogens. This represents part of the system involved in foetal-maternal communication and pregnancy recognition. Primate blastocysts therefore produce hCG in relatively high concentrations during the first 3 months of pregnancy. In males hCG increases the growth of the foetal testes.
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As hCG is only produced by embryonic cells, the presence of this hormone within maternal can be used for pregnancy confirmation.
===Equine Chorionic Gonadotrophin (eCG)===
===Equine Chorionic Gonadotrophin (eCG)===
eCG is a form of glycoprotein that is produced from chorionic girdle cells. In females the primary target organ are the ovaries where they faciliate the formation of the accessory corpora lutea.
eCG is a form of glycoprotein that is produced from chorionic girdle cells. In females the primary target organ are the ovaries where they faciliate the formation of the accessory corpora lutea.