The nervous system allows us to react to our surroundings very quickly and to coordinate our behavior. It comprises millions of neurones and electrical impulses pass along them very quickly.
What type of cells start electrical impulses along nerves?
What part of a nerve cell insulates the electrical signal?
What is the gap between nerve cells called?
What neurones carry signals to effectors?
Where do electrical signals not go in a reflex arc?
The spinal cord
The peripheral nerves
What effect do stimulants like caffeine have on your reaction times?
What part of the brain controls balance and coordination of movement?
What neurones carry signals from receptors?
What affect do depressants like alcohol have on your reaction times?
Speed them up
Slow them down
What type of receptors are found on your tongue?