B1 - nervous system

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an organ or cell able to respond to light, heat, or other external stimulus and transmit a signal
receptors
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muscle or glands that react to stimuli
effectors
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A change in the environment
stimuli
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Automatic response that bypases the CNS
reflex arc
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connect the sensory and motor neurones
relay
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A type of neuron that sends impulses from the brain to effectors
motor
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A type of neuron that sends impulses from the receptors to the brain.
sensory
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This includes the Brain and spinal cord
central nervous system
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A junction between to neurons which electrical signals must pass across
Synapse
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A drug which stops impulses passing across a synapse, causing paralysis
Curare
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A drug which stimulates a synapse to repeat impulses crossing synapses, causing spasms of constriction
strychine
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A chemical messenger
Hormone
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How do hormones travel?
blood
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Other cards in this set

Card 2

Front

muscle or glands that react to stimuli

Back

effectors

Card 3

Front

A change in the environment

Back

Preview of the front of card 3

Card 4

Front

Automatic response that bypases the CNS

Back

Preview of the front of card 4

Card 5

Front

connect the sensory and motor neurones

Back

Preview of the front of card 5
View more cards

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