Nervous system Flashcards
1
Q
how many pairs of spinal nerves
A
31 pairs
2
Q
how many pairs of cranial nerves
A
12 pairs
3
Q
how many neurons in an average human brain
A
100 billion
4
Q
4 parts of a neuron
A
dendrites, cell body, axon and axon endings
5
Q
CNS, brain job
A
to insure that life is maintained. The brain stem is to control autonomic activity, regulate sleep and consciousness and some reflex response.
6
Q
CNS, spinal cord job
A
facilitates the transferal of messages to and from the brain to the PNS. Also involved in in reflex actions.
7
Q
what is the central nervous system made of
A
the brain and spinal cord
8
Q
whats is the nervous system split out into
A
peripheral nervous system and central nervous system
