The brain

You carry around a three-pound mass of wrinkly material in your head that controls every single thing you will ever do. From enabling you to think, learn, create, and feel emotions to controlling every blink, breath, and heartbeat — this fantastic control center is your brain.

It is a structure so amazing that a famous scientist once called it “the most complex thing we have yet discovered in our universe.”

The brain constitutes only about 2 percent of the human body, yet it is responsible for all of the body’s functions. It is the center of the central nervous system in humans as well as the primary control center for the peripheral nervous system.

The brain controls “lower” or involuntary activities such as heartbeat, respiration, and digestion – these are known as autonomic functions. It also controls “higher” order, conscious activities, such as thought, reasoning, and abstraction.

Watch the video and note the answers to the questions.

1. What are the four main regions of the brain?
2. What is the largest part of the brain? What does it control?
3. What is the cerebellum responsible for?
4. What structures does the brain stem include?
5. What body functions do the parts of the brain stem control?
6. What makes up the core of the brain?
7. What structured does the diencephalon include?
8. What does the diencephalon control?
9. What is the blood-brain barrier?
10. How can brain health be improved?

Human brain