The process of myelination in the brain:
A)is complete by the time a baby is born.
B)occurs at a relatively constant rate across all areas.
C)is completed in the cerebral cortex by approximately 1 year of age.
D)continues into adulthood for some parts of the brain.

Question

Quizplus · Accepted Answer

Myelination is the process of forming a fatty sheath, called myelin, around axons in the brain, which helps to speed up neural communication. This process is not complete by the time a baby is born (choice A), and occurs at different rates across different areas of the brain (choice B). Myelination in the cerebral cortex is not complete by 1 year of age (choice C), and actually continues into adulthood for some areas of the brain, such as the prefrontal cortex, which is important for decision-making, problem-solving, and other complex cognitive processes. Therefore, choice D is the best answer.

The Process of Myelination in the Brain