Of the limbs,

one set, forming a pair, is 'arms'. To the arm
belong the 'shoulder', 'upper-arm', 'elbow', 'fore-arm', and 'hand'.
To the hand belong the 'palm', and the five 'fingers'. The part of the
finger that bends is termed 'knuckle', the part that is inflexible
is termed the 'phalanx'. The big finger or thumb is single-jointed,
the other fingers are double jointed. The bending both of the arm
and of the finger takes place from without inwards in all cases; and
the arm bends at the elbow. The inner part of the hand is termed the
palm', and is fleshy and divided by joints or lines: in the case of
long-lived people by one or two extending right across, in the case of
the short-lived by two, not so extending. The joint between hand and
arm is termed the 'wrist'. The outside or back of the hand is
sinewy, and has no specific designation.