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Normal Parturition - Anatomy & Physiology (view source)

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* [[Parturition - Coordinated Myometrial Contraction - Anatomy & Physiology|Coordinated Myometrial Contraction]]

* Voluntary contraction of abdominal muscles

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~~== Stage 3: Placental Expulsion ==~~

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~~In most species, expulsion of foetal membranes quickly follows expulsion of the foetus.~~

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* After the birth of the young, regular abdominal contractions largely cease.

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* Myometrial contractions persist.

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** Decreased amplitude, but become more frequent and less regular.

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** Important for dehiscence and expulsion of foetal membranes.

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* Waves of contractions from uterus to the cervix persist.

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** Act in a peristaltic fashion in the cow and sow in the reverse direction.

== Placental Changes ==

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** Not the mare or camelids.

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== Parturition Behaviour ==

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== Placental Expulsion ==

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In most species, expulsion of foetal membranes quickly follows expulsion of the foetus.

+

* After the birth of the young, regular abdominal contractions largely cease.

+

* Myometrial contractions persist.

+

** Decreased amplitude, but become more frequent and less regular.

+

** Important for dehiscence and expulsion of foetal membranes.

+

* Waves of contractions from uterus to the cervix persist.

+

** Act in a peristaltic fashion in the cow and sow in the reverse direction.

+

= Parturition Behaviour =

== Mare ==

Suzannah.stacey

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