Section 2: human development before birth

This increase in tension and contractions tears the placenta from the uterine wall and pushes it out of the uterus, through the cervix, and out of the birth canal. Placental expulsion, also called the afterbirth, usually occurs within the first hour after delivery.

The Placental Stage. ... This increase in tension and contractions tears the placenta from the uterine wall and pushes it out of the uterus, through the cervix, and out of the birth canal. Placental expulsion, also called the afterbirth, usually occurs within the first hour after delivery.

BTW going to tell the truth Got this off a website and if you put your question in google brings this up and she cheated to... check it if you don't believe me.

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the sphincter muscles at the end of the digestive tract is the anus.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.