What type of cells start electrical impulses along nerves?
Receptor
Effector
Motor neurones
What part of a nerve cell insulates the electrical signal?
Axon
Myelin sheath
Dendron
What is the gap between nerve cells called?
Neurotransmitter
Synapse
What neurones carry signals to effectors?
Motor
Relay
Sensory
Where do electrical signals go in a reflex arc?
The spinal cord
Cerebral hemispheres
Cerebellum
What affect do stimulants like caffeine have on your reaction times?
No effect
Increase them
Decrease them
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?
Brain
Heart
Lungs
By which process do neurotransmitters cross the synapse?
Diffusion
Osmosis
Active transport