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## Relation of the muscles with their movements Order the muscles of this section into two groups: 1) those that act on the mouth; and 2) those that act on the eyes. ### Muscles of the Head and Neck | MUSCLE | ORIGIN...

## Relation of the muscles with their movements Order the muscles of this section into two groups: 1) those that act on the mouth; and 2) those that act on the eyes. ### Muscles of the Head and Neck | MUSCLE | ORIGIN | INSERTION | ACTION | INNERVATION | | :------------------------------------ | :----------------------------------------------------------- | :--------------------------------------------------------- | :----------------------------------------------------------------------------------------------------------------------- | :----------------- | | Occipitofrontal | Aponeurosis epicraneal | Skin superior to the supraorbital edge | Tensions the scalp, raises eyebrows and wrinkles the forehead horizontally | Facial nerve (VII) | | Frontal belly | | | | | | Occipital belly (occipital part of the Head | | | | | | Orbicular of the mouth | Muscle fibers that surround the mouth opening | Skin of the lip to the mouth angle | Closes lips, like to kiss; compresses lips against the teeth, as if to speak | Facial nerve (VII) | | Zygomatic major | Zygomatic bone | Skin of the mouth | Pulls the angle of the mouth upwards, and the smile | Facial nerve (VII) | | Zygomatic minor | Superior to the maxilla bone | | Lifts the upper lip, exposing the upper teeth | Facial nerve (VII) | | Muscle of the lip | | | | | | Lip depressor | Mandibular | Skin of the lower lip | Depresses the lower lip | Facial nerve (VII) | | Depressor of the corner of the mouth | Mandible | Angle of the mouth | Pulling the corner of the mouth down | Facial nerve (VII) | | Levator of the corner of the mouth | Inferior to the infraorbital foramen | | Lifts the angle of the mouth | Facial nerve (VII) | | Buccinator | Alveolar apophyses of the maxilla and the mandible, band of fascia that extends between the pterygoid processes and the medial pterygoid | Skin of the mouth | Compresses the cheeks, like to silib, or in lateral mastication to maintain food between the teeth | Facial nerve (VII) | | Risorius | Fascia that covers the parotid (saliva) | Angle of the Mouth | Attracts the angle of the mouth laterally, as if to say "puckers" | Facial nerve (VII)| | Mental | Mandible | Skin of the chin | Raises and protrudes the lower lip and also wrinkles the skin on the chin | Facial nerve (VII) | ### Neck muscles | MUSCLE | ORIGIN | INSERTION | ACTION | INNERVATION | | :------------------------ | :-------- | :----------- | :----------------------------------------------------------------------------- | :------------------- | | Platysma, broad, flat muscle | Fascia which covers the deltoids and pectoral muscles | Mandibula | Attracts the skin of the part of the lower face (or the lower end) and the neck | Facial nerve (VII) |