He is doing special exercises to strengthen his mentalis muscle.

He is doing special exercises to strengthen his caninus muscle.

I am planning to go to Inner Mongolia, an autonomous region of China, next week.

In Sanskrit phonology, bilabial sounds play an important role.

In Sanskrit phonology, the importance of pharyngeal sounds is emphasized.

In Sanskrit phonology, retroflex sounds play an important role.

In Sanskrit phonology, the concept of triphthong is important.

The balance of intestinal bacteria greatly affects health.

His son was born with clubfoot.

The internal anal sphincter is a muscle that helps us control defecation.