The spinal column consists of 33 stacked vertebrae connected and aligned by various ligaments and muscles, according to the Mayfield Clinic. The spine is the structural backbone for the musculoskeletal system. It protect... More » Science Human Anatomy Bones

Five spinal nerve roots come together to make up the sciatic nerve, the largest nerve in the human body. The sciatic nerve branches to form both the tibial and common fibular nerves. More » Science Human Anatomy Nerves

The lumbar spine is made up of vertebrae found in the lower back, says Spine-health. These vertebrae curve in toward the abdomen and begin 5 or 6 inches below the scapular bones. Doctors refer to these vertebrae alphanum... More » Science Human Anatomy

Structures in the spine include the vertebrae, intervertebral disks, spinal cord, ligaments and facet joints. The stacked vertebrae are aligned by ligaments and muscles and separated by intervertebral disks, according to... More » Science Human Anatomy Bones

The anatomy of the wrist consists of eight carpal bones, connecting to the ulna and radius at the proximal end and five metacarpal bones at the distal end, and a complex network of overlapping muscles, ligaments, tendons... More » Science Human Anatomy Bones

The spinal column consists of a cervical curve containing seven cervical vertebrae, a thoracic curve containing 12 thoracic vertebrae, a lumbar curve containing five lumbar vertebrae and a sacral curve composed of five s... More » Science Human Anatomy Bones

The human spinal cord is protected by the spinal column, which is made up of bones called vertebrae. Each vertebra consists of the spinous process, transverse process and body. The spinal cord passes through the vertebra... More »