172
edits
Changes
Parturition Endocrine Control - Anatomy & Physiology (view source)
Revision as of 10:10, 17 August 2009
, 10:10, 17 August 2009→Species that depend on the Corpus Luteum
* For parturition to occur, progesterone production by the Corpus Luteum must be terminated.
* For parturition to occur, progesterone production by the Corpus Luteum must be terminated.
* As the foetus grows in a restrictive environment it becomes stressed. Stress leades to a rise in foetal [[Pituitary_Gland_-_Anatomy_%26_Physiology#Hormones_of_the_Anterior_Pituitary_Gland|ACTH]]. The rise in ACTH causes production of Cortisol from the foetal [[Adrenal_Glands_-_Anatomy_%26_Physiology|Adrenal Glands]].
* As the foetus grows in a restrictive environment it becomes stressed. Stress leades to a rise in foetal [[Pituitary_Gland_-_Anatomy_%26_Physiology#Hormones_of_the_Anterior_Pituitary_Gland|ACTH]]. The rise in ACTH causes production of Cortisol from the foetal [[Adrenal_Glands_-_Anatomy_%26_Physiology|Adrenal Glands]].
* The rise in foetal cortisol leased to an increased Oestrogen:Progesterone ratio by upregulating '''Aromatase''' enzymes which convert Androgens to Oestrogens. Cortisol also reduces Progesterone production.
* The rise in foetal cortisol leased to an increased Oestrogen:Progesterone ratio by upregulating '''aromatase''' enzymes which convert Androgens to Oestrogens. Cortisol also reduces Progesterone production.
=== Species that depend on Placental Progesterone===
=== Species that depend on Placental Progesterone===