origin:  styloid process

insertion:  side and inferior aspect of tongue

hypoglossal n. CN XII

retracts and elevates tongue

origin:  body and greater horn of hyoid

insertion:  side and inferior aspect of tongue

hypoglossal n. CN XII

depresses and retracts tongue

origin:  genial tubercle of mandible

insertion:  inferior aspect of tongue; hyoid

Hypoglssal n.  CN XII

protrudes and depresses tongue

origin:  soft palate

insertion:  dorsolateral side of tongue

CN X vagus n. via pharyngeal plexus

elevates tongue