Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
The pollex is the anatomical term for the thumb, which is the first digit of the human hand. It has a unique range of motion, including opposition, that allows it to touch the other fingers, aiding in grasping and manipulation.
These are the bones that make up the fingers and thumbs of the hand, each finger having three phalanges (distal, middle, proximal) except for the thumb which has two.