the nervous system Flashcards
1
Q
how does information pass from receptors to the CNS?
A
pass along cells as electrical impulses
2
Q
what is the CNS made up of?
A
brain and spinal cord
3
Q
what is the role of the CNS?
A
coordinates the response of effectors
4
Q
order of nervous system
A
stimulus –> receptor –> sensory neurone –> CNS –> motor neurone –> effector –> response
5
Q
receptors
A
cells that detect stimuli
6
Q
what do effectors do?
A
respond to nervous impulses and bring about a change
7
Q
what do muscles / glands do in response to hormones?
A
glands - secrete hormones
muscles - contract in response to a nervous impulse
8
Q
what is a synapse?
A
the connection between two neurones
9
Q
how do synapses work?
A
- release of chemical / neurotransmitter
- crosses gap by diffusion
- attaches to next neurone causing impulse
