People who have had too much alcoholic drinks have problems in walking straight and driving. Which part of their brain has been affected?

Many short fibres extending from the cell body of a nerve cell are called

1. dendrons
2. axon
3. dendrites
4. ganglia

These nerves emerge from the brain and reach organs in the head region.

1. spinal
2. cranial
3. vagus
4. pelvic

The message that travels along a nerve in the form of a wave of chemical disturbance is called

1. stimulus
2. response
3. sensation
4. impulse