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Depressor septi muscle

from Latin: deprimere - depress, press down; septum - wall, separation
German: Musculus depressor septi nasi

1 Definition

The depressor septi muscle is a small muscle in the region of the nose. It counts among the mimic muscles.

2 Devolution

The depressor septi muscle has its origin in the Fossa incisiva of the maxilla. Its fibers draw into medial and cranial direction. There, they insert into the cartilage of the nasal septum (septal nasal cartilage) and the nostrils (cartilage of nostrils).

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3 Innervation

The depresor septi muscle is innervated by the buccal branches of the VIIth cranial nerve (facial nerve).

4 Function

The depressor septi muscle pulls the tip of the nose and parts of the nostrils downwards.

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