Drag the terms on the left to the appropriate blanks on the right to complete the sentences. terms may be used more than once. sacral plexus cervical plexus brachial plexus lumbar plexus 1. the obturator and femoral nerves branch from this plexus. 2. striking the "funny bone" (ulnar nerve) may cause injury to a nerve of this plexus. 3. trauma to a nerve of this plexus may cause wrist drop. 4. a fall or improper administration of an injection to the buttocks may injure a nerve of this plexus. 5. the phrenic nerve branches from this plexus.