A drawing of a passerine's spread wing skeleton inside the wing's outline, from Wikimedia Commons (Retired electrician): the humerus, radius and ulna, the carpal bones, the carpometacarpus, the alular digit, both phalanges of the major digit, the minor digit, the hand as a whole and the wing's…
A real anatomical diagram. Hover any part to see its name, click to answer the quiz question.