Understanding organisms

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What are nerve cells?
Nerve cells are called neurones. Nerve impulses pass along the axon.
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What happens in a reflex arc?
What happens in a reflect action is show by a reflex arc. The links in a reflex arc are: stimulus>receptor>sensory neurone>motor neurone>effector>response.
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What is the pathway for a spinal reflex?
Receptor>sensory neurone>relay neurone>motor neurone>effector
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How are Neurones adapted?
Neurones are adapted by being long, having branched endings (dendrites) to pick up impulses and having an insulator sheath.
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What is a synapse?
A synapse is a gap between neurones. The arrival of an impulse triggers the release of a transmitter substance, which diffuses across the synapse. The transmitter substance binds with receptor molecules in the membrane of the next neurone.
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Other cards in this set

Card 2

Front

What happens in a reflex arc?

Back

What happens in a reflect action is show by a reflex arc. The links in a reflex arc are: stimulus>receptor>sensory neurone>motor neurone>effector>response.

Card 3

Front

What is the pathway for a spinal reflex?

Back

Preview of the front of card 3

Card 4

Front

How are Neurones adapted?

Back

Preview of the front of card 4

Card 5

Front

What is a synapse?

Back

Preview of the front of card 5

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