Question 241 · LEK · Factors of labor

Which of the following fetal head circumferences is the smallest?

  1. A. occipito-frontal.
  2. B. suboccipito-bregmatic.
  3. C. occipito-mental.
  4. D. suboccipito-hyoid.
  5. E. genio-hyoid.
Hint

Recall which plane passes through the birth canal when the fetal head is well flexed in an occiput anterior vertex presentation.

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