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Psychology
Biopsychology (P2)
Divisions of the Nervous System
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Sophia Kirkwood
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(AO1)The Nervous system is split into what 2 divisions? Functions?
The
central
nervous system (CNS) and the
peripheral
nervous system (PNS)
Addition - the nervous system has
many
subdivisions
CNS =
Processes
and
stores
information + issues
orders
to
muscles
/
glands
/
organs.
PNS =
Translates
information
to
and
from
the
CNS
(AO1) What can the CNS be further divided into? (incl. function)
Brain
=
responsible
for
higher
order
functions
like
decision
making &
personality
Spinal
cord function =
bridge
between
brain
and
peripheral
nerves & involved in
reflex
arcs
(AO1) What can the PNS be further divided into? (incl. function)
Somatic NS = controls
skeletal
muscles (
voluntary
responses) (via
sensory
and
motor
pathways
)
Autonomic
NS =
regulates
(internal
automatic
functions)
glands
,
blood
vessels
,
internal
organs
(through only
motor
pathways)
(AO1) What can the autonomic NS be further divided into? Functions?
Sympathetic
NS = (
increases
energy) mobilises the body for
action
through
fight
or
flight
:
increases
heart
rate,
blood
pressure and
sweat
from
sweat
glands.
Parasympathetic
NS = (
conserves
energy) restores body to a
resting
state (
rest
and
digest
):
increases
digestion
,
salivation
and decreases
heart
rate
(AO1) Draw out the divisions of the nervous system diagram
The diagram:
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