Doula Certification Anatomy and Physiology of Birth 1 — Questions and Answers
Question 1: What are the three stages of labor?
- Latent, active, transition
- First stage (dilation), second stage (birth), third stage (placenta) (Correct answer)
- Early, middle, late
- Cervical, fetal, placental
Correct answer: First stage (dilation), second stage (birth), third stage (placenta)
Labor is divided into the first stage (cervical dilation), second stage (pushing and birth), and third stage (placental delivery).
Question 2: What measurement indicates the cervix is fully dilated?
- 5 centimeters
- 8 centimeters
- 10 centimeters (Correct answer)
- 12 centimeters
Correct answer: 10 centimeters
Full cervical dilation is 10 centimeters, which allows the baby's head to pass through the cervical opening into the vaginal canal.
Question 3: What hormone is primarily responsible for triggering uterine contractions during labor?
- Estrogen
- Progesterone
- Oxytocin (Correct answer)
- Cortisol
Correct answer: Oxytocin
Oxytocin, released by the posterior pituitary gland, stimulates uterine contractions and plays a key role in labor progression.
Question 4: What is effacement of the cervix?
- Dilation of the cervical os
- Thinning and shortening of the cervix (Correct answer)
- Descent of the fetal head
- Rupture of the membranes
Correct answer: Thinning and shortening of the cervix
Effacement is the process by which the cervix thins, shortens, and softens in preparation for and during labor.
Question 5: What is the amniotic sac?
- The placenta
- The fluid-filled membrane surrounding and protecting the fetus (Correct answer)
- The uterine lining
- The umbilical cord covering
Correct answer: The fluid-filled membrane surrounding and protecting the fetus
The amniotic sac is a fluid-filled membrane that surrounds and cushions the fetus throughout pregnancy.
Question 6: What is the placenta's primary function during pregnancy?
- Produce the fetal heartbeat
- Exchange nutrients, oxygen, and waste between mother and fetus (Correct answer)
- Regulate fetal temperature only
- Produce amniotic fluid only
Correct answer: Exchange nutrients, oxygen, and waste between mother and fetus
The placenta serves as the exchange organ, transferring oxygen and nutrients to the fetus while removing carbon dioxide and waste products.