A miscarriage usually occurs before ________ weeks of pregnancy.

A miscarriage usually occurs before ________ weeks of pregnancy.
 
  A) 20
  B) 25
  C) 30
  D) 36

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The area of skin and muscle between the vagina and the anus is the:
 
  A) cervix.
  B) perineum.
  C) bloody show.
  D) genitalia.

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The opening into the uterus is called the:
 
  A) symphysis pubis.
  B) bladder.
  C) cervix.
  D) vagina.

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Which of the following signals the first stage of labor?
 
  A) the presenting part
  B) the bloody show
  C) crowning
  D) delivery of the placenta

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During which stage of labor does the cervix stretch and thin?
 
  A) dilation
  B) crowning
  C) delivery
  D) presenting part