The Child's Muscle Fibers

Multiple Choice

The child's muscle fibers

A) become longer, thicker, and less watery at a fairly steady rate during childhood.
B) are greater in number than needed, and the excess will be pruned with exercise.
C) do not develop according to a proximodistal/cephalocaudal sequence.
D) are fully developed by age 6.
E) increase more rapidly in girls.