Newborns are most likely to develop which muscles most quickly?
A) the masseter and buccinator
B) the buccinator and orbicularis oris
C) the orbicularis oris and risorius
D) the risorius and zygomaticus
E) the levator labii and mentalis

Question

Quizplus · Accepted Answer

The buccinator and orbicularis oris muscles are the primary muscles involved in suckling and breastfeeding, which are essential for the survival of newborns. Thus, they tend to develop most quickly in newborns.

Newborns Are Most Likely to Develop Which Muscles Most Quickly