Template:Endocrine birth table - Revision history

Z8600021 at 05:34, 2 Haziran 2013

2013-06-02T05:34:39Z

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Z8600021 at 03:14, 2 Haziran 2013

2013-06-02T03:14:48Z

← Older revision		Revision as of 14:14, 2 Haziran 2013
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	* Aspirin inhibitor of PG synthesis - leads to increased duration of pregnancy		* Aspirin inhibitor of PG synthesis - leads to increased duration of pregnancy
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Z8600021 at 03:06, 2 Haziran 2013

2013-06-02T03:06:17Z

← Older revision		Revision as of 14:06, 2 Haziran 2013
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Z8600021: Created page with "{| |- bgcolor="CEDFF2" ! Hormones ! Roles |- | valign=top|Progesterone | * maintains pregnancy - initially synthesized by corpus luteum, then levels maintained by placenta * ..."

2013-06-02T01:59:34Z

Created page with "{| |- bgcolor="CEDFF2" ! Hormones ! Roles |- | valign=top|Progesterone | * maintains pregnancy - initially synthesized by corpus luteum, then levels maintained by placenta * ..."

New page

{|
|- bgcolor="CEDFF2"
! Hormones
! Roles
|-
| valign=top|Progesterone
|
* maintains pregnancy - initially synthesized by corpus luteum, then levels maintained by placenta
* hyperpolarizes myometrial cells (-65 mV), reduces excitability and conductivity
* Level in plasma may fall just before parturition, definitely decreases following delivery of placenta
|- bgcolor="F5FAFF"
| valign=top|Estrogens
|
* Group of steroidal hormones, peak when parturition begins
* induce increased synthesis of actomyosin and ATP in myometrial cells
* alter membrane potential (-50 Mv) enhances excitation/conduction
* act to directly increase myometrial contraction
* indirectly by increasing oxytocin from pituitary gland
* Estriol - synthesized by fetus and placenta
|-
| valign=top|Oxytocin
|
* Peptide hormone (8aa) from maternal posterior pituitary, initiation and maintenance of labour (synthetic form labour induction)
* myometrium sensitivity to oxytocin (increased by estrogen, decreased by progesterone)
* stimulus for release - mechanical stimulation of uterus, cervix and vagina (ethanol inhibits release)
|- bgcolor="F5FAFF"
| valign=top|Prostaglandins
|
* hydroxy fatty acids - sythesized by placenta, amniotic fliud contains mainly PGF2 alpha, causes myometrial contraction (also in maternal plasma)
* prostaglandin F2 alpha (PGF2 alpha) and [[P#prostaglandin E2|prostaglandin E2]] (PGE2) - used to induce labour (intravenous, oral, intravaginal, intraamniotic)
* Aspirin inhibitor of PG synthesis - leads to increased duration of pregnancy
|- bgcolor="CEDFF2"
| [[Endocrine Development]]
| {{Birth Links}}
|}<noinclude>[[Category:Template]]</noinclude>