The Largest Nerve in the Body, the Sciatic Nerve, Belongs

Question

The largest nerve in the body, the sciatic nerve, belongs to the ________ nerve plexus.
A) lumbar
B) sacral
C) brachial
D) cervical

Accepted Answer

The sciatic nerve arises from the sacral nerve plexus, which supplies nerves to the pelvic region, buttocks, and legs. The lumbar plexus supplies nerves to the lower back and upper leg, the brachial plexus supplies nerves to the shoulder and upper limb, and the cervical plexus supplies nerves to the neck and head.