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Segment-indicating muscle

German: Kennmuskel

1 Definition

The segment-indicating muscle refers in subjects of anatomy and neurology to a muscle which is innvervated by only one segment of the spinal cord. A deficiency of this muscle permits a distinct conclusion of the localization of the neural lesion. The majority of muscles is supplied by nerve fibres originated from several segments of the spinal cord. It is important to distinguish the concept of the segment-indicating muscle from the concept of the leading muscle.

2 Example

The musculus brachioradialis (radioperiosteal reflex) is a segment-indicating muscle of the sement C6.

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