The name of depressor labii inferioris tells what it does, where does it insert?
a. angle of the mouth
b. skin of the lower lip
c. skin of the chin
d. mandible

Skin of the lower lip.

Explanation:

Depressor labii inferioris is the type of a chin muscle. This uscle originates from the base line of the mandible. Depressor labii inferioris muscle produce different facial expression.

Depressor labii inferioris muscle is inserted into the skin of lower lip. This muscle helps in the pulling of lower lip forward and downward.

Thus, the correct answer is option (b).

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