According to Wikipedia, the human hand is conventionally divided into the following parts:
- Wrist: The region surrounding the carpal bones.
- Palm: The underside of the hand, lying superficial the metacarpal bones.
- Opisthenar (AKA back of the hand): The dorsal area lying opposite to the palm.
- Heel of the hand: The area of the palm that is most proximal, lying over the bases of the metacarpals.
- Digits: The four fingers and the opposable thumb.
Meanwhile, the human foot is conventionally divided into three parts:
- Hindfoot: Comprises both the ankle (talus) and the heel (calcaneus).
- Midfoot: Comprises the arches of the foot, made by the remaining five bones of the tarsus.
- Forefoot: Comprises the anterior "half" of the foot that is formed by the metatarsal bones as well as the five toes attached to them. (Theoretically, it's probably reasonable to just identify the metatarsus alone as the forefoot proper, since the toes are technically appendages of the foot as a whole.)
- Sole: The underside of the foot as a whole.
- Instep: The arched part of the top of the foot between the ankle and the toes.
- Toes: The digits of the foot.
However, this leaves a very crucial question unanswered: Are there plain English names for the "main body" of the hand/foot, i.e. the 3-dimensional portion that lies between the wrist/ankle bone and the digits, as opposed to their separate subdivisions or 2-dimensional surfaces?