Seven-year-old Milaka can use scissors to cut small paper dolls out of construction paper,something she could not do well at age 5.What best accounts for her improving dexterity?

Question

Quizplus · Accepted Answer

Increased myelination of neurons in the motor cortex, which is responsible for fine motor movements, leads to improved dexterity. As the myelin sheath around the neurons thickens, signals can be transmitted more quickly and accurately, allowing for more precise movements. Practice, increased bone ossification, and increased muscle development may also contribute to improved dexterity, but they are not the primary factors.

Seven-Year-Old Milaka Can Use Scissors to Cut Small Paper Dolls