The postnatal growth of the human brain results from
A) synaptogenesis.
B) an increase in the number of neurons.
C) myelination.
D) all of the above
E) both A and C

Question

Quizplus · Accepted Answer

Postnatal growth of the human brain results from both synaptogenesis (formation of new synapses between neurons) and myelination (formation of a fatty sheath around axons that increases neural transmission speed). While there is not a significant increase in the number of neurons after birth, there is an increase in the complexity of dendritic branching and neuron connectivity, leading to a significant increase in synaptic density. Therefore, both A and C are correct choices.

The Postnatal Growth of the Human Brain Results from