Содержание
- 2. It consists of the brain, the spinal cord, which runs from the brain and down through
- 3. The brain is like the central computer for the nervous system. It receives messages from different
- 4. If you touch a hot pan by accident, for example, the nerves in your skin form
- 5. The brain is a very complex organ with many different parts.
- 6. The biggest part is the cerebrum, responsible for intelligence, memory, personality, emotion, speech and the ability
- 7. Next is the smaller cerebellum, controlling balance, movement and coordination, and the brain stem. This is
- 8. The thalamus carries messages from the sensory organs like the eyes, ears, nose and fingers to
- 9. Lastly, there is the tiny pituitary gland, which produces and releases hormones to control growth, metabolism,
- 10. Nerve cells, or neurons, are like long, thin threads with fingers, called dendrites, at each end.
- 11. When a neuron is stimulated, by heat, touch or sound, for example, or by some other
- 12. The brain alone contains around 100 billion neurons!
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