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Paper 2
Biopsychology
Nervous system
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Cards (12)
What is the two main functions of the nervous system?
1 .
Collect
,
process
and
respond
to
information
in the
environment
2 .
Co-ordinate
the
working
of
different
organs
and
cells
What two sub-systems is the nervous system divided into?
Central nervous system (
CNS
)
Peripheral nervous system
(
PNS
)
The CNS is made up of the
brain
and
spinal cord
The brain is the
centre
of all
conscious awareness
What is the brain's outer layer known as?
Cerebral cortex
The brain is
divided
into
two hemispheres
The spinal cord is an
extension
of the
brain
What is the function of the spinal cord in the CNS?
Passes
messages
to
and
from
the
brain
and
connects
nerves
to the
PNS
; also
responsible
for
reflex actions
The PNS transmits
messages
via
millions
of
neurons
to and from the
CNS
What is the PNS sub-divided into?
Autonomic nervous system
(ANS)
Somatic nervous system
(SNS)
What is the function of the autonomic nervous system?
Governs
vital functions
in the
body
;
breathing
,
heart rate
, etc.
What is the function of the somatic nervous system?
Governs muscle movement
and
receives information
from
sensory receptors