False colour Nuclear Magnetic Resonance (NMR) image of the human neck area, showing a normal spinal cord. The cord appears as a continuous light blue band which runs down the centre of the neck. Surrounding the cord & clearly visible at its left are the bony vertebrae which compose the spine, and between them the inter-vertebral discs. The trachea (the airway from the mouth to the lungs) is visible at far left, with the throat at top. Subcutaneous fat underneath the skin at back of the neck (right) is coded red & yellow.