Origin
Maxilla
Insertion
Into the alar cartilage of the nose and the aponeurosis over the nasal bone.
Blood supply
Facial artery.
Nerve supply
Facial nerve.
Action
In situations where normal breathing becomes difficult, this muscle widens the nostrils to help more air to get in.
Disease/Injury
NA
Muscle exercise
NA
Interesting facts
This muscle is used to express challenge, excitement, and anger.
