Answer
Involuntary muscles in the uterine wall are activated by a hormone called Oxytocin at the time of birth, which pushes the baby out of the vagina.
Work Step by Step
As above
Biology 2010 Student Edition
by Miller, Kenneth R.; Levine, Joseph S.
Published by
Prentice Hall
ISBN 10:
9780133669510
ISBN 13:
978-0-13366-951-0
Chapter 34, Endocrine and Reproductive Systems - 34.4 - Fertilization and Development - 34.4 Assessment - Page 1001: 2b
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