axial muscles

temporalis (action)

elevates mandible

masseter (action)

elevates mandible

medial pterygoid (action)

elevates mandible

lateral pterygoid (action)

opens jaws

anterior belly digastric (action)

depresses mandible

posterior belly digastric (action)

elevates larynx

stylohyoid (action)

elevates larynx

mylohyoid (action)

elevates floor of mouth

sternohyoid (action)

depresses hyoid

omohyoid (action)

depresses hyoid

sternocleidomastoid (action)

flexion of the neck

temporalis (origin; insertion)

temporal bone; coronoid process of the mandible

masseter (origin; insertion)

zygomatic arch; ramus of the mandible

medial pterygoid (origin; insertion)

pterygoid process; ramus of the mandible

lateral pterygoid (origin; insertion)

pterygoid process; ramus of the mandible

anterior belly of digastric (origin; insertion)

mental protuberance; hyoid bone

posterior belly of digastric (origin; insertion)

mastoid process; hyoid bone

stylohyoid (origin; insertion)

styloid process of temporal bone; hyoid bone

mylohyoid (origin; insertion)

body of mandible; hyoid bone

sternohyoid (origin; insertion)

manubrium and clavicle; hyoid bone

omohyoid (origin; insertion)

superior border of scapula; hyoid bone

sternocleidomastoid (origin; insertion)

manubrium and clavicle; mastoid process