Mechanism of the Elbow-Joint
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“Fig. 28. - Mechanism of elbow-joint. ..., where rc and uc show respectively the size, shape, and position of the radial condyle and ulnar condyle of the humerus. It is evident that in the flexed state of the elbow, as shown in the middle figure, the radius, rd, is do pushed upon that its end projects beyond ul, the ulna; while in the opposite condition of extension, shown in the lower figure, rd is pulled back to a corresponding extent.” Elliot Coues, 1884
Keywords
wings, birds, ornithology, bird anatomy, elbow joint, bird skeleton, bird bones, external bird parts, wing structureGalleries
Bird AnatomySource
Elliot Coues Key to North American Birds (Boston, MA: Estes and Lauriat, 1884)
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