Synapses and Reflexes Flashcards
1
Q
What do neurones transmit?
A
Information very quickly to and from the brain
2
Q
What do synapses connect?
A
Neurones
3
Q
How are the nerve signals transferred?
A
By chemicals which diffuse across the gap
4
Q
What do the chemicals do?
A
Set off a new electrical signal in the next neurone
5
Q
What do reflexes do?
A
Prevent injury
6
Q
What are reflexes?
A
Automatic responses to certain stimuli
7
Q
What does the reflex arc go through?
A
The central nervous system
8
Q
What are the steps of the reflex arc?
A
Stimulus Receptor Sensory neurone Relay neurone Motor neurone Effector Response
9
Q
What happens when a stimulus is detected by a receptor?
A
Impulses are sent
10
Q
What happens when the impulses reach a synapse?
A
They trigger chemicals to be released and cause impulses to be sent along the next neurone
