Assertion: cervical plexus | /r/MadeOf | lower four nerves
Facets:
value: with the first thoracic ventral ramus
type: OTHER
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.