What is the largest nerve in the body?

Online Answer
The sciatic nerve is the largest nerve in your body. It begins in your lower back and travels all the way down to the heel of your foot. You may have heard of a condition called sciatica in which painful sensations radiate from your lower back and down your leg..
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sacral plexusThe sacral plexus gives rise to one major nerve and six collateral nerve branches. The sciatic nerve exits the pelvis through the greater sciatic notch and then descends between the greater trochanter of the femur and the ischial tuberosity..
The five nerve roots come together to form a right and left sciatic nerve. On each side of your body, one sciatic nerve runs through your hips, buttocks and down a leg, ending just below the knee. The sciatic nerve then branches into other nerves, which continue down your leg and into your foot and toes.