Medicipate! Conserve your knowledge 
Medicipate!
Conserve your knowledge
 
Write article
Please log in to edit this article.

Mimic muscles

Synonyms: facial muscles, face muscles
German: Mimische Muskulatur

1 Definition

Mimic muscles are defined as a group of muscles in the region of the face, which insert into the skin above them and make the physical expression of emotions and moods possible through their movements.

Click and drag to move the 3D model around the page.

2 Anatomy

The mimic muscles count among the derivatives of the pharyngeal arches (particularly of the second arch), and they are innervated by the facial nerve. Most of the muscles have their origin in the cranial bones, or in the fascia passing over them.

3 Division

According to the course and the location of the individual muscles, you can create a systematic overview. In the following, the individual mimic muscles are associated with the individual areas of the facial skull:

3.1 Forehead and Epicranium

The occipitofrontal muscle and the temporoparietal muscle also are summarized to the epicranial muscle.

3.2 Eye

3.3 Nose

3.4 Mouth

The levator labii superioris alaeque nasi muscle and the lesser zygomatic muscle are also attributed to the levator labii superioris muscle in anatomic literature, and there, they are called the Caput angulare, respectively Caput zygomaticum, of this muscle.

3.5 Others

3.6 Muscles of the ear

In a broader sense, you can also count the muscles of the ear among the mimic muscles. They comprise:

4 Innervation

The innervation of the mimic muscles is provided by branches of the facial nerve (nerve VII).

5 Function

On the one hand, the mimic muscles enable important physiological functions such as the eyelid closure. On the other hand, it forms the base of human mimics and thereby the most important instrument of non-verbal communication.

6 Clinical presentation

The function of the mimic muscles is alternated in a characteristic way in different diseases, such as a facial nerve paralysis, where the affected half of the face has a flappy palsy. Tetanus manifests itslef in mimics as Risus sardonicus.

Tags: , ,

To comment on this article, .

Click here for creating a new article in the DocCheck Flexikon.

Initial author:

Last authors:

0 rating(s) (0 ø)
Share

309 Views

Language:
Follow DocCheck: