What are some of the unique characteristics of the platysma…

What are some of the unique characteristics of the platysma muscle?   a. it tenses and wrinkles the skin of the lower face and the neck.   b. it depresses the mandible and the angle of the mouth.   c. it is located in the lower neck.   d. it inserts to the base of the mandible.

The _____ commonly known as the _____ muscle arises from the…

The _____ commonly known as the _____ muscle arises from the masseteric fascia and inserts to the skin at the angle of the mouth.  Additionally, this muscle pulls the angle of the mouth laterally. For this answer use all applicable names for this muscle, scientific and colloquial name(s).   a. triangularis   b. risorius   c. false smile   d. depressor anguli oris