The nervous system enables humans to react to their surroundings and to coordinate their behaviour. It comprises millions of neurones, and it uses electrical impulses to communicate 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 go in a reflex arc?
The spinal cord
What affect do stimulants like caffeine have on your reaction times?
Which type of neurones carry signals within the central nervous system?
What neurones carry signals towards the central nervous system?
Which part of the body is initially avoided in a reflex arc?
By which process do neurotransmitters cross the synapse?