Assertion: cervical plexus | /r/CapableOf | form brachial plexus
Facets:
Source sentences:
text: The cervical plexus is formed by the anterior divisions of the first four upper cervical nerves (C1–C4) and the lower four nerves (C5–C8) together with the first thoracic ventral ramus (T1), forming the brachial plexus.