3.1 Flashcards
what is the nervous system made up of
brain
spinal chord
peripheral nerves
what does the peripheral nervous system do
allows info to be sent to and from the cns
what is the peripheral nervous system made of
somatic and autonomic
summarise the action of the somatic nervous system
it is voluntary responses making concious decisions for a response some involuntary responses are involved
what does antagonistic mean
they work opposite each other
what does the autonomic nervous system do
regulates the internal environment by controlling structures and organs , it is involuntary
what is the autonomic nervous system contain
sympathetic and parasympathetic systems
what type of response does the sympathetic system produce
excitatory
what type of response does the parasympathetic system produce
inhibitory
what is a converging neural pathway
nerve impulses from several neurons travel to one neuron
what does a neural pathway converging mean
it means the sensitivity to excitatory and inhibitory signals is increased
give an example of a converging neural pathway
rods in the retina which allow you to see in dim light
describe a diverging neural pathway
impulse travels from one neuron to several neurons
what does a diverging neural pathway mean
the impulse can affect more than one neuron
give an example of a diverging neural pathway
fine motor control
