Increase in brain weight during the preschool years is due to the ______. increase in thickness of the skull.
A) increase in thickness of the skull.
B) continuing myelination of nerve fibers.
C) increase in size of the spinal cord.
D) continuing of growth of the medulla.

Question

Quizplus · Accepted Answer

The increase in brain weight during the preschool years is primarily due to the continuing myelination of nerve fibers, which enhances the speed and efficiency of neural communication. Myelination is the process of forming a myelin sheath around the nerves, which is crucial for the proper functioning of the nervous system.

Increase in Brain Weight During the Preschool Years Is Due