- Anatomical terminology
- Skeletal system
- Joints
- Muscles
-
Head muscles
- Extraocular muscles
-
Facial muscles
- Occipitofrontalis
- Corrugator supercilii
- Depressor supercilii
- Orbicularis oculi
- Malaris
- Buccinator
- Orbicularis oris
- Mentalis
- Depressor anguli oris
- Depressor labii inferioris
- Levator anguli oris
- Levator labii superioris
- Risorius
- Zygomaticus major
- Zygomaticus minor
- Levator labii superioris alaeque nasi
- Nasalis
- Procerus
- Depressor septi nasi
- Compressor narium minor
- Dilator naris anterior
- Muscles of mastication
- Neck muscles
- Muscles of upper limb
- Thoracic muscles
- Muscles of back
- Muscles of lower limb
-
Head muscles
- Heart
- Blood vessels
- Lymphatic system
- Nervous system
- Respiratory system
- Digestive system
- Urinary system
- Female reproductive system
- Male reproductive system
- Endocrine glands
- Eye
- Ear
Mentalis
The mentalis (Latin: musculus mentalis) is a facial muscle located in the chin area below the mouth. It is classified as the buccolabial facial muscle. The mentalis produces small dimples in the skin of the chin.
Mentalis | |
Origin | Incisive fossa of mandible |
Insertion | Skin of chin |
Action | Produces small dimples in chin |
Innervation | Marginal mandibular branch of facial nerve (CN VII) |
Blood supply | Inferior labial artery of facial artery, mental artery of maxillary artery |
Origin
The mentalis originates from the incisive fossa located on the alveolar process of the mandible below the lateral incisor.
Insertion
The fibers of the mentalis radiate from the origin site and insert into the skin of the chin.
Action
Upon activation, the mentalis muscle produces small dimples in the chin. Contractions of the muscle produce facial expressions presenting doubt and indecision.
Innervation
The mentalis is innervated by the marginal mandibular branch of the facial nerve (CN VII).
Blood supply
The mentalis muscle receives blood supply from the inferior labial branch of the facial artery and mental branch of the maxillary artery.