Multiple choice

After delivery, which among the following layers of the uterus contracts to push out the placenta and also minimizes the blood loss in females?

  1. Endometrium

  2. Parametrium

  3. Peritoneum

  4. Myometrium

  5. Perimetrium
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D Correct answer
Explanation

The myometrium stretches during pregnancy to allow for the harboring of the pregnancy, and contracts in a coordinated fashion, via a positive feedback effect on the Ferguson reflex, during the process of labor. After delivery, the myometrium contracts to expel the placenta and reduce blood loss; where the crisscrossing fibres of middle layer compress the blood vessels.

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