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Summary A Level Psychology Divisions of the Nervous Systems £4.99
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Summary A Level Psychology Divisions of the Nervous Systems
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This document includes a summary on the divisions of the nervous system with explanations.I wrote them using class notes, revision guides and textbooks and used this to revise for my A levels and it proved useful. The Nervous System :))

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  • May 28, 2023
  • 1
  • 2022/2023
  • Summary

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The nervous system
The divisions of the central & Peripheral nervous system

Nervous system


Central nervous system (CNS) Peripheral Nervous system
(PNS)
The PNS Is a body wide network of
messenger neurons that sends
The CNS consists of : messages to and from the central
nervous system.
• Brain – which is
responsible for
complex conscious
and unconscious Autonomic Nervous Somatic Nervous System
processing and higher System (ANS) (ANS)
mental functions. • Responsible for • Responsible for
• Spinal cord – Which INVOLUNTARY VOLUNTARY
controls motor reflex MOVEMENTS MOVEMENTS
actions and sends • In charge of the • In charge of the
signals to AND from internal glands. For skeletal muscles. For
the brain example secretion of example when you
adrenal from adrenal decide to raise your
gland. arm
•



Parasympathetic Sympathetic Branch
Branch
• This is known as the • This is known as the
‘rest and digest’ ‘fight or flight’
response response.
It conserves the bodies
energy when relaxed. It increases bodily
-DECREASE functions to prepare
HEART/BREATHING yourself for response.
RATE
6 -INCREASE
-INCREASE DIGESTION HEART/BREATHING RATE
AND SALIVA -DECREASE DIGESTION
PRODUCTION AND SALIVA PRODUCTION
-CONSTRICT PUPILS -DIALATES PUPILS

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