Indicate whether each statement is true or false: The cerebrum accounts for the smallest portion of total brain weight. The cerebrum accounts for the largest portion of total brain weight. The cerebrum is responsible for conscious thought. The numerous folds, called gyri, serve to decrease the surface area.

False: The cerebrum does not account for the smallest portion of total brain weight. It is the largest part of the human brain, accounting for about two-thirds of the brain's mass.

True: The cerebrum does account for the largest portion of total brain weight.

True: The cerebrum is responsible for conscious thought. It controls voluntary actions, speech, senses, and is involved in learning and memory.

False: The numerous folds, called gyri, do not serve to decrease the surface area. In fact, they increase the surface area of the brain, allowing for higher function and thought.