38.8 MB (4.1 MB compressed)
3447 x 3937 pixels
29.2 x 33.3 cm ⏐ 11.5 x 13.1 in (300dpi)
MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Spinal nerves. Computer-enhanced historical illustration of the human spinal cord and spinal nerves. Red and blue blood vessels & red muscles of the back & the upper arms can be seen. The spinal cord is a mass of yellow nerve fibres running from top to bottom of image. The spinal cord and brain make up the central nervous system (CNS). A set of 31 spinal nerves are seen emerging in two rows at either side of the spinal cord. The lowest 9 nerves supply the legs and form a spray known as the cauda equina. Spinal nerves carry motor and sensory information between the body and CNS. Illustration by the celebrated Italian anatomist Paolo Mascagni (1755-1815).
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