Dermal ridges - ridges of the skin produced by the projecting papillae of the corium on the palm of the hand and sole of the foot, producing a fingerprint and footprint characteristic of the individual; called also dermal ridges.
Dextrality - the preferential use, in voluntary motor acts, of the right member of the major paired organs of the body, as the right eye, hand, or foot.
Didactylism - the presence of only two digits on a hand or foot.
Digital ray - a digit of the hand or foot and corresponding metacarpal or metatarsal bone, regarded as a continuous unit.
Dorsalis pedis pulse - the pulse felt on the top of the foot, between the first and second metatarsal bones. In 8 to 10 per cent of the population this pulse cannot be detected.