The gangster hired muscles to protect him.

The temporal muscles are responsible for jaw movement.

The jaw muscles are responsible for chewing and biting.

The caninus muscles are responsible for lifting the corners of the mouth.

The deltoideus muscles are responsible for shoulder abduction.

Involuntary muscles are responsible for the automatic movements of the body.

The muscles of mastication are responsible for chewing and grinding food.

The scalene muscles are located in the neck and help with the movement of the head and neck.

The sternocleidomastoid muscles are located on the sides of the neck.

The temporoparietalis muscles are located in the temporal and parietal regions of the head.