The Nervous System

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  • Created by: Jc2000
  • Created on: 06-05-16 11:52
Neurone
a cell that transmits electrical impulses in the nervous system
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Central Nervous System (CNS)
brain and spinal cord
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Peripheral Nervous System (PNS)
nerves connecting the sense organs and effectors to the CNS
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Sense organs
detect changes both in and outside of the body. They contain receptor cells Eyes;Ears;Skin;Mouth;Nose
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Stimulus
anything your body is sensitive to e.g. noise,heat,light
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Impulses
Electrical signals in the nervous system that travel through neurones
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Sensory Neurone
sends impules from receptors in the sense organs to the CNS
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Motor Neurone
send impulses from the CNS to muscle and glands
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Relay Neurones
found in the spinal cord/brain. They link sensory and motor neurones
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The reflex arc
A- Receptor (reacts to a stimulus) B- Sensory neurone (carries message to the coordinator/CNS) C- relay neurones (gaps between neurones are called synapses D- Motor Neurone (carries message away from coordinator / CNS E- effector (mucles or gland)
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Other cards in this set

Card 2

Front

brain and spinal cord

Back

Central Nervous System (CNS)

Card 3

Front

nerves connecting the sense organs and effectors to the CNS

Back

Preview of the back of card 3

Card 4

Front

detect changes both in and outside of the body. They contain receptor cells Eyes;Ears;Skin;Mouth;Nose

Back

Preview of the back of card 4

Card 5

Front

anything your body is sensitive to e.g. noise,heat,light

Back

Preview of the back of card 5
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