skeletal muscle length biceps brachii muscle length 2014-07-28T17:58:26Z CMO:0002514 JSmith The distance between the two ends, that is, the extent of the longest dimension, of the long fusiform muscle of the upper arm (or the upper segment of the foreleg of quadrupeds) located on the anterior surface of the humerus. It arises in two heads from the scapula and flexes the elbow, integrates the actions of the shoulder and elbow and, in humans, supinates the hand. clinical_measurement_ontology