The Muscles of the Nose

From WikiMD

Anatomy > Gray's Anatomy of the Human Body > IV. Myology > 4c. The Muscles of the Nose

Henry Gray (1821–1865). Anatomy of the Human Body. 1918.

The Muscles of the Nose

The muscles of the nose (Fig. 378). comprise:


Depressor septi.


Dilatator naris posterior.

Dilatator naris anterior.


The Procerus (Pyramidalis nasi) is a small pyramidal slip arising by tendinous fibers from the fascia covering the lower part of the nasal bone and upper part of the lateral nasal cartilage; it is [inserted into the skin over the lower part of the forehead between the two eyebrows, its fibers decussating with those of the Frontalis.


The Nasalis (Compressor naris) consists of two parts, transverse and alar.

The transverse part arises from the maxilla, above and lateral to the incisive fossa; its fibers proceed upward and medialward, expanding into a thin aponeurosis which is continuous on the bridge of the nose with that of the muscle of the opposite side, and with the aponeurosis of the Procerus.

Alar part

The alar part is attached by one end to the greater alar cartilage, and by the other to the integument at the point of the nose.

Depressor septi

The Depressor septi (Depressor alœ nasi) arises from the incisive fossa of the maxilla; its fibers ascend to be inserted into the septum and back part of the ala of the nose. It lies between the mucous membrane and muscular structure of the lip.

Dilatator naris posterior

The Dilatator naris posterior is placed partly beneath the Quadratus labii superioris. It arises from the margin of the nasal notch of the maxilla, and from the lesser alar cartilages, and is inserted into the skin near the margin of the nostril.

Dilatator naris anterior

The Dilatator naris anterior is a delicate fasciculus, passing from the greater alar cartilage to the integument near the margin of the nostril; it is situated in front of the preceding.


These muscles vary in size and strength or may be absent.


All the muscles of this group are supplied by the facial nerve.


The Procerus draws down the medial angle of the eyebrows and produces transverse wrinkles over the bridge of the nose. The two Dilatatores enlarge the aperture of the nares.

Their action in ordinary breathing is to resist the tendency of the nostrils to close from atmospheric pressure, but in difficult breathing, as well as in some emotions, such as anger, they contract strongly.

The Depressor septi is a direct antagonist of the other muscles of the nose, drawing the ala of the nose downward, and thereby constricting the aperture of the nares. The Nasalis depresses the cartilaginous part of the nose and draws the ala toward the septum.

Additional images

External links

Gray's Anatomy

Anatomy atlases (external)

[1] - Anatomy Atlases

W8MD weight loss logo

Ad. Tired of being overweight?. W8MD's insurance Weight loss program can HELP*

Other languages:

Quick links: Medicine Portal | Encyclopedia‏‎‏‎ | Gray's Anatomy‏‎ | Topics‏‎ |‏‎ Diseases‏‎ | Drugs | Wellness | Obesity‏‎ | Metabolic syndrome | Weight loss*
Disclaimer: The entire contents of WIKIMD.ORG are for informational purposes only and do not render medical advice or professional services. If you have a medical emergency, you should CALL 911 immediately! Given the nature of the wiki, the information provided may not be accurate, misleading and or incorrect. Use the information on this wiki at your own risk! See full Disclaimer.
Link to this page: <a href="">The Muscles of the Nose</a>

  • Individual results may vary for weight loss from our sponsors.