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| Description: When the biceps contracts and the triceps relaxes, the forearm is pulled toward the upper arm. When the triceps contracts and the biceps relaxes, the arm straightens at the elbow. Picture Stats: Views: 117 Filesize: 306.21kB Height: 1020 Width: 1447 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=47604 |