1. the obturator and femoral nerves branch from this plexus.

a) sacral plexus
b) brachial plexus
c) cervical plexus
d) lumbar plexus

2. striking the "funny bone" (ulnar nerve) may cause injury to a nerve of this plexus.

a) sacral plexus
b) brachial plexus
c) cervical plexus
d) lumbar plexus
3. trauma to a nerve of this plexus may cause wrist drop.

a) sacral plexus
b) brachial plexus
c) cervical plexus
d) lumbar plexus
4. a fall or improper administration of an injection to the buttocks may injure a nerve of this

a) sacral plexus
b) brachial plexus
c) cervical plexus
d) lumbar plexus

5 the phrenic nerve branches from this plexus.
a) sacral plexus
b) brachial plexus
a) sacral plexus
d) lumbar plexus