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The Brain Is Thought to Be at Its Maximum Size

Question 15

Multiple Choice

The brain is thought to be at its maximum size at about the age of 20 because ______.


A) all synaptic formation ceases at this age
B) at this age the brain has its maximum number of neurons, synapses and myelinated axons
C) neurons are only produced to replace ones that have died
D) the skull cannot expand to house a bigger brain

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