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Disorders of Growth Hormones

Disorders of growth hormone are caused both by high secretion and low secretin of growth hormone.

Increased secretion: the pituitary is enlarged and if the gland presses optic chiasma it ultimately affects vision. Excessive secretion of growth hormone causes clinical conditions like

1. Gigantismgiant means very tall it is caused by over secretion of hormone before adolescence (before the closure of the epiphysis) by acidophilic tumor or excessive stimulation of acidophilic cells. In this condition following characteristics are present

  • Patient is very tall may be up to 8 to 9 feet in height, hence called giant.… (313 more words) …

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Hormones of Placenta

Placenta is the intimate connection between the foetus and the uterine wall of mother for the exchange of the nutrients. Placenta is a temporary endocrine gland present during pregnancy. It secrets some hormones; like estradiol, progesterone, human chorionic gonadotropin (hCG) and human chorionic somatotropin (hCS). Their functions are

  • Estradiol and progesterone have the same actions as in the non pregnant state.

  • However the main function of the placental progesterone is to check the contraction of uterine muscles and thus helps to maintain pregnancy.

  • hCG is produced by syncytiotrophoblast it is essential for the maintenance of corpus luteum in the early… (187 more words) …

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