DEAR DOCTOR K: A friend told me that we have no muscles in our fingers. Is that true? If so, then how do our fingers do all that they do?
DEAR READER: It is true, but our hands work wonderfully anyway. That's because even though there are no muscles in the fingers, 34 muscles in the palms and forearms make the fingers work. And our fingers perform a remarkable variety of feats, from the practical (opening doors and typing), to conveying information (through sign language or applause), to gathering information about the environment through our sense of touch.