Origin
Maxilla
Insertion
Into the alar cartilage, orbicularis oris, and the upper lip.
Blood supply
Facial artery.
Nerve supply
Facial nerve.
Action
The muscle is necessary for raising the upper lip and flaring the nostrils. It is a muscle of facial expression like sadness, dislike, etc.
Disease/Injury
NA
Muscle exercise
NA
Interesting facts
This muscle is strengthened for cosmetic reasons to boost your smile.
