Final answer:
The muscles that insert into the superficial fascia of the skin are the muscles of facial expression. They are designed to move the skin to create facial expressions, unlike other neck or mastication muscles that attach to bone.
Step-by-step explanation:
The muscles that insert into the superficial fascia of the skin are the muscles of facial expression. These muscles are unique because they insert into the skin surrounding the eyelids, nose, and mouth to produce facial expressions by moving the skin rather than bones. This is distinct from other muscles, such as those of the posterior neck, anterolateral neck, or muscles of mastication, which typically insert onto bone to facilitate movement.
The muscles of the anterior neck, including the suprahyoid and infrahyoid muscles, play a role in swallowing and speech and do not insert into the skin. The muscles of mastication are involved in chewing and also anchor to the bones, not the skin. Therefore, it is the muscles of facial expression that are designed to insert into the superficial fascia to create the wide range of human facial gestures.