widening of the blood vessels closer to the surface of the skin, to allow more heat to be lost through the skin by radiation
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vasoconstriction
narrowing of blood vessels close to the surface of the skin, so heat loss through the skin is reduced
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sensory neurone
receives the electrical impulse from receptor cells and travels towards the central nervous system
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relay neurone
relays an impulse within the central nervous system (brain and spinal cord)
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motor neurone
carries an impulse away from the the CNS and towards an effector. No dendron.
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synapse
gap between neurones
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neurotransmission
when an electrical impulse travels across the synapse. Neurotransmitters are released when the impulse reaches the axon end. They travel across the synapse and cause an impulse to be stimulated in the next neurone.
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Other cards in this set
Card 2
Front
vasodilation
Back
widening of the blood vessels closer to the surface of the skin, to allow more heat to be lost through the skin by radiation
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