This document defines and describes common body positions used in medical terminology. It lists 14 different positions including anatomical position, decubitus position, dorsal recumbent position, Fowler position, Kraske position, knee-chest position, lateral recumbent position, lithotomy position, prone position, Sims position, supine position, Trendelenburg position. It also provides prefixes used to describe positions, directions, and extremities such as cephalo for head and acro for extremity or end.