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A Level Biology - Neuronal Communication

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Quiz by slidingtacos
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Last updated: November 1, 2018
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First submittedNovember 1, 2018
Times taken63
Average score28.6%
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Definition
Keyword
Neurones that carry an action potential from the CNS to the effector
Motor neurone
A chemical used as a signalling molecule between two neurones in a synapse
Neurotransmitter
Join sensory neurones to motor neurones
Relay neurones
Neurones that carry an action potential from the sensory receptor to the CNS
Sensory neurones
Cells/sensory nerve endings that respond to to a stimulus in the internal or external environment of an organism and can create action potentials
Sensory receptors
A brief reversal of the potential across the membrane of a neurone causing a peak of +40mV compared to the resting potential of -60mV
Action potential
A pressure sensor found in the skin
Pacinian corpuscle
Definition
Keyword
The potential difference across the membrane while the neurone is at rest
Resting potential
A synapse that uses acetylcholine as its neurotransmitter
Cholinergic synapse
A mechanism that increases a change taking the system further away from the optimum
Positive feedback
Has no individual layer of myelin
Non-myelinated neurone
A cell that converts one form of energy into another - in this case to an electrical impulse
Transducer
Occurs when the effects of several excitatory post-synaptic potentials are added together
Summation
Has an individual layer of myelin around it
Myelinated neurone
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