Question

The pelvis is divided into two parts, the false and true pelvis. The nurse explains that the size of the true pelvis is most important because:

a. the fetal head must pass through this part.
b. these are the mother's measurements.
c. the false pelvis can change.
d. it needs to be larger.

Answer 1

The true pelvis is crucial for childbirth, as the fetal head must pass through it. It is distinguished by its shape and size in females, evolved for successful childbirth.

Step-by-step explanation:

The size of the true pelvis is most important because the fetal head must pass through this part during childbirth. The true pelvis, also known as the lesser pelvis, is the narrow, rounded space below the pelvic brim and contains the pelvic organs. The female pelvis has evolved to be wider with a rounded pelvic brim and a larger subpubic angle to facilitate this process, distinguishing it from the male pelvis, which is heavier and has a narrower pelvic cavity.