Zygomaticus Major and Zygomaticus Minor

anatomy-modell-muscle-head-6013-EditedMuscle Origin

Zygomatic bone to angle of mouth/orbicularis oris

The zygomaticus major is a muscle of facial expression which draws the angle of the mouth superiorly and posteriorly to allow one to smile. Wiki
The zygomaticus minor is a muscle of facial expression. It originates from malar bone and continues with orbicularis oculi on the lateral face of the levator labii superioris. Wiki

Insertion

Zygomatic bone to angle of mouth/orbicularis oris

The zygomaticus major lies in the cheek area and extends down to the mouth. It draws the angle of the mouth upward and backward in laughing; the zygomaticus minor inserts into the outer part of the upper lip. InnerBody

Action

Raises corner of mouth; Draws angle of mouth upward and laterally

The zygomaticus major draws the angle of the mouth superiorly and posteriorly to allow one to smile. The zygomaticus minor draws the upper lip backward, upward, and outward (used in making sad facial expressions).

Innervation – Nerve control

The buccal and zygomatic branches of the facial nerve.

Like all muscles of facial expression, the zygomatic major is innervated by the facial nerve (the seventh cranial nerve), more specifically, the buccal and zygomatic branches of the facial nerve; the zygomaticus minor is also innervated by the facial nerve (CN VII). Wiki

Artery

The facial artery (external maxillary artery in older texts) is a branch of the external carotid artery that supplies structures of the superficial face.

The facial artery arises in the carotid triangle from the external carotid artery a little above the lingual artery and, sheltered by the ramus of the mandible, passes obliquely up beneath the digastric and stylohyoid muscles, over which it arches to enter a groove on the posterior surface of the submandibular gland. Wiki

Antagonist muscles

 

Pictures of muscles

 

Trigger Point Referrals

 

Stretching description

 

Exercises

 

Injuries

 

Treatment

 

Additional Resources
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