The skeletal muscles of the head and trunk are called the axial muscles. The axial muscles are grouped based on location, function, or both. Axial muscles can be divided into four groups based on location and function: 1. muscles of the head and neck 2. muscles of the vertebral column 3. oblique and rectus muscles 4. muscles of the pelvic floor.
Muscles of the head and neck are subdivided into 6 groups: 1. muscles of facial expression 2. extrinsic eye muscles 3. muscles of mastication 4. muscles of the tongue 5. muscles of the pharynx 6. anterior muscles of the neck.
Muscles of facial expression originate on the skull: 1) orbicularis oris constricts the mouth opening buccinator moves food around the cheeks 2) Muscles of the epicranium (scalp) include a) temporoparietalis b) occipitofrontalis c) the platysma covers the anterior surface of the neck
Frontal and occipital bellies are separated by the epicranial aponeurosis.
The six extra-ocular or extrinsic eye muscles originate on the surface of the orbit and control the position of the eye: inferior rectus, medial rectus, superior rectus, lateral rectus, inferior oblique, superior oblique
The muscles of mastication move the mandible. Masseter, the strongest jaw muscle. Temporalis helps lift the mandible, pterygoid muscles position the mandible for chewing.
The muscles of the pharynx begin the swallowing process. Pharyngeal constrictor muscles move food into the esophagus, laryngeal elevator muscles elevate the larynx, palatal muscles lift the soft palate.
Anterior muscles of the neck control the position of the larynx, depress the mandible, and support the tongue and pharynx. Digastric, from chin to hyoid, and hyoid to mastoid. Mylohyoid, floor of the mouth. Geniohyoid, between hyoid and chin. Stylohyoid, between hyloid and styloid. Sternocleidomastoid, from the clavicle and sternum to the mastoid. Omohyoid, attaches scapula, clavicle, 1st rib and hyoid.
These are some details of the principle axial muscles.
Also, view this thread, it has a pretty good answer too:
[Solved] Examine the principal axial muscles of the body and distinguish its origins,
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