Hormones and Nerves

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  • Created by: Alina
  • Created on: 19-11-13 17:44
Name the receptors and their stimuli.
eyes-light, ears-sound and position of head, tongue- chemicals in food, nose- chemicals in the air, skin-touch,pain,pressure and temperature
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What is the role of the sensory neurone?
It carries signals from the receptor to the brain and spinal cord
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What happens at a synapse
Two neurones meet there is a tiny gap called a synapse. Signals cross this gap using chemicals. One neurone releases the chemical into the gap. The chemical diffuses across the gap and makes the next neurone transmit an electrical signal.
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What is a reflex action?
This is when the receptor is stimulated, it sends signals to the central nervous system. When the reaction does not involve the brain, this is a reflex action
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Sequence for a reflex action
stimulus → receptor → sensory neurone → relay neurone → motor neurone → effector
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Other cards in this set

Card 2

Front

What is the role of the sensory neurone?

Back

It carries signals from the receptor to the brain and spinal cord

Card 3

Front

What happens at a synapse

Back

Preview of the front of card 3

Card 4

Front

What is a reflex action?

Back

Preview of the front of card 4

Card 5

Front

Sequence for a reflex action

Back

Preview of the front of card 5

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