Depressor septi nasi muscle
| Depressor septi nasi muscle |
|---|
|
| origin |
| Upper jaw ( Fossa incisiva ) |
| approach |
| Nasal septum |
| function |
| Pulling down of the nostril, narrowing of the nostril |
| Innervation |
| Facial nerve ( cranial nerve VII) |
The depressor septi nasi muscle ("pulling down the nasal septum") is a delicate skin muscle between the nose and upper lip that belongs to the mimic muscles . It arises in the incisive fossa of the upper jaw and attaches to the nasal septum (septum nasi). In the area of attachment, it partially connects with the wing part of the nasal muscle . The depressor septi nasi muscle is an opponent of the other nasal muscles, pulls the nostrils downwards and thus narrows the nostril on the same side.