Critical thinking

As used in this reading, the words "useless stuffing" refer to ________________

• unimportant material

• unimportant lobes on the surface of the cerebral cortex

• unused or new neurons inside the brain

1. Adult humans have ________________ connections between neurons.

• 100 billion

• 125 trillion

• 700 million

The cerebral cortex consists of ________________

• four parts called neurons

• four parts called lobes

• useless stuffing

What is the main idea of the last paragraph?

• People are born with most of the neurons they have when they become adults.

• The brain has 100 million cells called neurons.

• The brain's neurons send and receive information throughout the body faster than any computer.

A mouse brain is ________________ .

• about as strong as the world'd best supercomputer

• about half as strong as the world's best supercomputer

• about twice as strong as the world's best supercomputer

What is the main idea of the third paragraph?

• The cerebral cortex, which has four parts, makes us intelligent.

• People used to think the brain was not important.

• The cerebral cortex has three parts.

The brain's neurons use the spinal cord like a ________________ .

• pathway

• map which shows the locations of different parts of the body

• highway

The top of the cerebral cortex ________________ .

• processes sounds that people hear

• processes things that people touch

• processes images from our eyes

People who injure the side lobe of the cerebral cortex ________________ .

• may have trouble remembering things

• may not be able to feel happiness or sadness as well as other people

• are usually not very intelligent