NEURONES & NERVES
This type of cell carries electrical impulses in the body.
Neuron
This is the gap between two neurones.
Synapse
This part of the nervous system includes the brain and spinal cord.
central nervous system
This is a fast automatic response to a stimulus
reflex action
This part of the eye allows light to enter.
pupil
This part of the neurone carries impulses away from the cell body.
Axon
These chemicals carry signals across a synapse.
neurotransmitters
This part of the brain controls thinking and memory.
cerebrum
This detects the stimulus in a reflex arc.
receptor
This structure focuses light onto the retina.
lens
A bundle of neurones is called this.
Nerve
When neurotransmitters reach the next neurone, they attach to __________ on its surface.
Receptor
This part controls balance and coordination.
cerebellum
This neurone carries impulses to the spinal cord.
sensory neuron
These cells help us see in dim light.
rods
These neurones carry impulses from receptors to the CNS.
Sensory neuron
The direction of impulse across a synapse is always this.
One direction only
This part controls breathing and heartbeat.
medulla oblongata
This part produces the response in a reflex.
effector
This part carries signals from the eye to the brain.
optic nerve
This covering speeds up nerve impulse transmission.
Myelin Sheath
Name one neurotransmitter.
acetylcholine
This system controls automatic actions like digestion.
autonomic nervous system
Put in order: receptor, motor neurone, sensory neurone, effector, relay neurone
receptor → sensory → relay → motor → effector
This area has the sharpest vision.
fovea