Q.40 - Biology

Question

Describe the stages of labor. 

Step-by-Step Solution

Answer

There are three stages of labor: contractions, childbirth, and delivery of the placenta.

Step 1. Introduction

Labor is a series of continuous, progressive contractions of the uterus that help the cervix dilate (open) and efface (thin). This allows the fetus to move through the birth canal. Labor usually starts two weeks before or after the estimated date of delivery.

Step 2. Explanation

• During the first stage of labor, contractions help cervix to thin and begin to open. This is called effacement and dilation.

• The second stage of labor begins when the cervix is completely dilated (open), and ends with the birth of your baby. Contractions push the baby down the birth canal.

• Third Stage of Labor :-After the birth of the baby, uterus continues to contract to push out the placenta (afterbirth).