Muscles and joints that can move through their full range of motion are powerful, more coordinated and less likely to be injured is TRUE.
Step-by-step explanation:
Different muscles and joints have different flexibilities. Joints in the skull are fixed joints that allow no movement. Joints in the spine allow some movement and synovial joints allow greater freedom of movement.
Flexibility of the same type of joints may be different for different persons. Joint structure, age, genetics, activity level etc are some of the factors that determine flexibility of joints in individuals.