CENTRAL NERVOUS SYSTEM - brain and spinal cord , it is the origin of all complex commands and decisions .
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What is the PNS?
PERIPHERAL NERVOUS SYSTEM - sends information to the CNS from the outside world and from the CNS to muscles and glands.
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What is the SNS?
SOMATIC NERVOUS SYSTEM - part of the PNS , transmits information to the CNS and it recieves information from the CNS to control voluntary muscle movement. Connects the CNS to the senses
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What is the ANS?
AUTONOMIC NERVOUS SYSTEM - other divison of the PNS , transmits information to and from the CNS , operates involuntarily (autonomic). Divided into 2 branches
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Sympathetic
arouses the body - fight or flight response
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Parasympathetic
relaxes the body - rest and digest response
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how do neurons communicate?
by transmitting chemical and electrical impulses to another
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what do Sensory neurons do?
carry info from sense organs to the brain
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what do Relay neurons do?
carry info to & from the brain, decides how to respond to info whilst analysing it
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what do Motor neurons do?
carry info from the brain to muscles and glands
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Other cards in this set
Card 2
Front
What is the PNS?
Back
PERIPHERAL NERVOUS SYSTEM - sends information to the CNS from the outside world and from the CNS to muscles and glands.
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