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Placenta Endocrine Function - Anatomy & Physiology (view source)
Revision as of 09:59, 17 June 2010
, 09:59, 17 June 2010no edit summary
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|<font color=Purple>Prostaglandin F2a</font>
|Prostaglandin F2a
|Produced towards the end of pregnancy in increasing amounts to allow for parturition.
|Produced towards the end of pregnancy in increasing amounts to allow for parturition.
|Causes luteolysis and promotes uterine contractions.
|Causes luteolysis and promotes uterine contractions.
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|<font color=Purple>Progesterone</font>
|Progesterone
|The Placenta takes over Progesterone production from the Corpus Luteum to maintain the pregnancy.
|The Placenta takes over Progesterone production from the Corpus Luteum to maintain the pregnancy.
|Maintains the pregnancy by thickening the cervix, depressing the maternal immune response and preventing ovulation. It also promotes mammary growth.
|Maintains the pregnancy by thickening the cervix, depressing the maternal immune response and preventing ovulation. It also promotes mammary growth.
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|<font color=Purple>Oestrogen<font>
|Oestrogen
|Oestrogen levels rise throughout pregnancy as the placenta grows.
|Oestrogen levels rise throughout pregnancy as the placenta grows.
|Stimulate the growth of the myometrium, promote mammary development and suppress gonadotrophin release from the [[Pituitary Gland - Anatomy & Physiology|pituitary gland]].
|Stimulate the growth of the myometrium, promote mammary development and suppress gonadotrophin release from the [[Pituitary Gland - Anatomy & Physiology|pituitary gland]].
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|<font color=Purple>Placental Lactogen<font>
|Placental Lactogen
|This is related to [[Lactation - Endocrine Control - Anatomy & Physiology|Prolactin]] and [[Pituitary Growth Hormone - Anatomy & Physiology|Growth hormone]], and is produced by the placenta and uterus.
|This is related to [[Lactation - Endocrine Control - Anatomy & Physiology|Prolactin]] and [[Pituitary Growth Hormone - Anatomy & Physiology|Growth hormone]], and is produced by the placenta and uterus.
|Promotes growth and differentiation of mammary tissue. Identified in primates, ruminants and rodents.
|Promotes growth and differentiation of mammary tissue. Identified in primates, ruminants and rodents.
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|<font color=Purple>Equine Chorionic Gonadotropin (eCG)<font>
|Equine Chorionic Gonadotropin (eCG)
|This is produced by foetal trophoblast cells, and is actually the same molecule as equine LH.
|This is produced by foetal trophoblast cells, and is actually the same molecule as equine LH.
|Prevents luteal regression and is thus the signal for [[Gestation -Maternal Recognition of Pregnancy - Anatomy & Physiology|Maternal Recognition of Pregnancy]] in equids.
|Prevents luteal regression and is thus the signal for [[Gestation -Maternal Recognition of Pregnancy - Anatomy & Physiology|Maternal Recognition of Pregnancy]] in equids.
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|<font color=Purple>Human Chorionic Gonadotropin (hCG)<font>
|Human Chorionic Gonadotropin (hCG)
|This is produced by foetal trophoblast cells.
|This is produced by foetal trophoblast cells.
|Prevents luteal regression and is thus the signal for [[Gestation -Maternal Recognition of Pregnancy - Anatomy & Physiology|Maternal Recognition of Pregnancy]] in primates.
|Prevents luteal regression and is thus the signal for [[Gestation -Maternal Recognition of Pregnancy - Anatomy & Physiology|Maternal Recognition of Pregnancy]] in primates.
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