Biology

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Created by: phoebereynolds
Created on: 15-04-14 13:48

Whats a Stimulus?

It's a change in your environment that you may need to react to

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What are Receptors

they are groups of cells which are sensitive to a stimulus

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What do receptors do?

They change stimulus energy(e.g light energy) into electrical impulses

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What are sensory Neurones?

The nerve cells that carry signals as electrical impulses from the receptors to the central nervous system

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What are motor Neurones?

The nerve cells that carry signals to the effector muscles or glands

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What are effectors?

muscles and glands(they respond in different ways).Muscles contract in response to a nervous impulse whereas glands secrete hormones

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where is all the information from the sense organ sent?

The central nervous system

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What does the central nervous system consist of?

the brain and spinal cord.

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Whats the passage of information in a reflex called?

Reflex arc

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what happens when a stimulus is detected?

An impulse is sent along a sensory neurone to the spinal cord. The spinal cord then passes on a message to the relay neurone,the impulses is sent to a motor neurone this then travels to the effector,the effector then reacts.

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Whats the connection between two neurones called?

Synapse

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Other cards in this set

Card 2

Front

What are Receptors

Back

they are groups of cells which are sensitive to a stimulus

Card 3

Front

What do receptors do?

Back

Card 4

Front

What are sensory Neurones?

Back

Card 5

Front

What are motor Neurones?

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Biology