Q: Is a human back the large posterior area of the human body? ¶
A: Yes, and rising from the top of the buttocks to the back of the neck and the shoulders.
Q: Is a human back thicker and has fewer nerve endings than the skin on any other part of the torso? ¶
Q: Is a human back the vertebral column? ¶
A: Yes, and specifically the length from the top of the thoracic vertebrae to the bottom of the lumbar vertebrae, which houses the spinal cord in its spinal canal, and which generally has some curvature that gives shape to the back.