Arm muscles, computer artwork. The uppermost muscle (dark green) is the deltoid. Below it are the biceps (dark blue). The brachioradialis muscle in th
Arm muscles, computer artwork. The uppermost muscle (dark green) is the deltoid. Below it are the biceps (dark blue). The brachioradialis muscle in the forearm is light blue. To its right are the flexor carpi radialis, palmaris longus, flexor digitorum superficialis and flexor carpi ulnaris muscles (light green). All these muscles act to flex (bend) the upper and lower arm, hand and fingers around the elbow, wrist and knuckle joints. Muscles on the other side of the arm cause the opposite action (extension) to straighten the joints. At right is the brachial plexus, the network of nerves (yellow) that originate in the neck, pass through the shoulder and innervate the arm.
Size: 4180px × 4180px
Photo credit: © SPRINGER MEDIZIN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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