Anatomy
Origin:
Nasal bone and upper part of the lateral nasal cartilage.
Insertion:
Skin of lower forehead between the eyebrows.
Key Relations:
Lies over the nasal bone.
Functions
Draws medial border of eyebrows inferiorly resulting in transverse wrinkles over the bridge of the nose.
e.g. as in an expression of anger..
Supply
Nerve Supply:
Zygomatic branch of the facial nerve (CN 7).
Blood Supply:
-Lateral nasal artery
–Angular artery.
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