Muscles of the Tongue and Soft Palate
Order by
18 terms
Terms | Definitions |
|---|---|
 What is the tongue comprised of? | muscles, nerves and blood vessels. covered by mucous membranes |
| What are the intrinsic muscles? | superior longitudinal, transverse, vertical and inferior longitudinal |
| What are the extrinsic muscles? | genioglossus, hyoglossus, styloglossus |
| Where do intrinsic muscles originate and insert? | origins are inside the tongue, insertions are inside the tongue |
| What do intrinsic muscles determine? | the shape of the tongue, they lie within the tongue |
| What do extrinsic muscles control? | the position of the tongue, they originate at a point distinct from the tongue |
| Superior longitudinal | changes shape of tongue by shortening and thickening, most superficial, runs in oblique and longitudinal direction |
| Transverse | changes shape of tongue, makes tongue long and narrow, runs in transverse direction deep to superior longitudinal |
| Vertical | located on ventral (bottom) surface of tongue, runs in vertical direction, changes shape of tongue by making long and narrow |
| Inferior Longitudinal | changes shape of tongue by shortening and thickening, located on ventral surface of tongue, runs in longitudinal direction |
| Genioglossus | Action: protrusion of tongue, assists in preventing tongue from sinking back and obstructing respiration |
| Hyoglossus | Action: depresses the tongue |
| Styloglossus | Action: retract and move the tongue superiorly and posteriorly |
| What are the muscles of the soft palate? | palatoglossus, levator veli palatini, and tensor veli palatini |
| Palatoglossus | Action: elevates base of tongue. forms anterior and posterior pillars and also tonsils |
| Levator Veli Palatini | Action: raises soft palate. involved w/ altitude and ear popping |
| Tensor Veli Palatini | Action: tenses and slightly lowers soft palate |
| Where do extrinsic muscles originate and insert? | origins are outside the tongue, insertions are inside the tongue |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.