Where does the levator labii superioris insert?
upper lip
Levator labii superioris muscle
| Origin | Zygomatic process of maxilla, maxillary process of zygomatic bone |
|---|---|
| Insertion | Blends with muscles of upper lip |
| Action | Elevates upper lip, exposes maxillary teeth |
| Innervation | Zygomatic and buccal branches of facial nerve (CN VII) |
Where is the levator Labii Inferioris located?
Depressor labii inferioris is a paired facial muscle located in the chin region of the face. Due to its quadrangular shape, it is also called quadratus labii inferioris….Depressor labii inferioris muscle.
| Origin | Oblique line of mandible (continuous with platysma muscle) |
|---|---|
| Insertion | Skin and submucosa of lower lip |
| Action | Depresses lower lip inferolaterally |
What is the insertion for the levator labii superioris alaeque nasi?
| Levator labii superioris alaeque nasi muscle | |
|---|---|
| Origin | Nasal bone |
| Insertion | Nostril and upper lip |
| Nerve | Buccal branch of facial nerve |
| Actions | Dilates the nostril; elevates the upper lip and wing of the nose |
What is the function of the depressor labii inferioris?
The function of the muscles in the buccolabial group is to control the lips, including their shape, position, and movement. The depressor labii inferioris works within that group to pull the lower lip down and forward when it contracts.
Where is the levator labii superioris alaeque nasi?
The levator labii superioris alaeque nasi muscle is attached to the upper frontal process of the maxilla and inserts into the skin of the lateral part of the nostril and upper lip. It has the longest name of any muscle in an animal.