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The Placenta is a hugely important endocrine organ, producing many [[Hormones - Anatomy & Physiology|hormones]] which affect the status of pregnancy and the maternal physiology.
|linkpage =Endocrine System - Anatomy & Physiology
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|linktext =Endocrine System
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|maplink = Endocrine System (Content Map) - Anatomy & Physiology
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|subtext1=REPRODUCTIVE SYSTEM
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The Placenta is a hugely important endocrine organ, producing many [[Endocrine System - Hormones - Anatomy & Physiology|hormones]] which affect the status of pregnancy and the maternal physiology.
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|<font color=Purple>Prostaglandin F2a</font>
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|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>
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|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>
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|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 [[Endocrine System - Pituitary Gland - Anatomy & Physiology|pituitary gland]].
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|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>
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|Placental Lactogen
|This is related to [[Lactation - Endocrine Control - Anatomy & Physiology|Prolactin]] and [[Endocrine System - Pituitary Growth Hormone - Anatomy & Physiology|Growth hormone]], and is produced by the placenta and uterus.
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|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>
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|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 [[Female Reproductive Tract -Maternal Recognition of Pregnancy - Anatomy & Physiology|Maternal Recognition of Pregnancy]] in equids.
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|Prevents luteal regression and is thus the signal for [[Maternal Recognition of Pregnancy - Anatomy & Physiology|Maternal Recognition of Pregnancy]] in equids.
 
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|<font color=Purple>Human Chorionic Gonadotropin (hCG)<font>
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|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 [[Female Reproductive Tract -Maternal Recognition of Pregnancy - Anatomy & Physiology|Maternal Recognition of Pregnancy]] in primates.
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|Prevents luteal regression and is thus the signal for [[Maternal Recognition of Pregnancy - Anatomy & Physiology|Maternal Recognition of Pregnancy]] in primates.
 
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[[Category:Endocrine System - Anatomy & Physiology]][[Category:Pregnancy and Parturition]]
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