A lip seal is important because
A) it keeps food and liquid in the mouth during mastication.
B) it helps maintain the positive pressure for swallowing.
C) it keeps one from breathing during mastication.
D) a & b
E) a, b, & c

Question

Quizplus · Accepted Answer

A lip seal is important because it keeps food and liquid in the mouth during mastication (A) and helps maintain the positive pressure for swallowing (B). It does not prevent breathing during mastication (C).

A Lip Seal Is Important Because