The human brain appears extremely wrinkled when closely examined.These folds ____.

Question

Quizplus · Accepted Answer

The folds in the human brain, called gyri and sulci, allow for a greater surface area of cortex to be included in the skull. This increased surface area allows for more neurons to be packed into the brain, which is thought to contribute to higher cognitive function. The other choices are incorrect; the folds are not purely cosmetic, they are not a byproduct of old age, and they do not primarily act as a shock-absorption device.

The Human Brain Appears Extremely Wrinkled When Closely Examined