Amniotic sac

:Chorion redirects here. For the entertainment company see Chorion (company)

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The amniotic sac is a tough but thin transparent pair of membranes, which hold a developing embryo (and later fetus) until shortly before birth. The inner membrane, the amnion, contains the amniotic fluid and the fetus. The outer membrane, the chorion, contains the amnion and is part of the placenta.

Related Topics:
Embryo - Fetus - Birth - Placenta

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An artificial rupture of membranes (ARM), also known as an amniotomy, may be performed by a midwife or obstetrician. This is usually performed using an amnihook and is intended to induce or accelerate labour.

Related Topics:
Midwife - Obstetrician

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