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What is a stimulus
A change in the environment of an organism
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Name the two organs that make up the CNS
The brain and the spinal chord
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What do sensory neurones do?
Carry impulses from the receptors to the CNS
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Where do motor neurones carry signals to and from?
From the CNS to the effectors
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What are receptors? Give an example
Receptors are cells that detect stimuli, eg. taste receptors
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What are effectors? Give two examples
All you muscles and glands, which respond to ner
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What are effectors? Give two examples
All you muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing
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What are effectors? Give two examples
All you muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from receptors and coordinates a response
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What are effectors? Give two examples
All you muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from receptors and coordinates a response
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What are effectors? Give two examples
All your muscl
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What is the function of thre fatty sheath surrounding some axons?
This acts as an electrical insulator by sheilding the neurone from the neighbouring cells a
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What is the function of thre fatty sheath surrounding some axons?
This acts as an electrical insulator by sheilding the neurone from the neighbouring cells and speeding up the electrical impulse
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What is the function of thre fatty sheath surrounding some axons?
This acts as an electrical insulator by sheilding the neurone from the neighbouring cells and speeding up the electrical impulse
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What is a synapse?
The gap between two neurones
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What is the function of thre fatty sheath surrounding some axons?
This acts as an electrical insulator by sheilding the neurone from the neighbouring cells and speeding up the electrical impulse
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What is a synapse?
The gap between two neurones
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How could the drug ecstasy increase the concentration of seretonin in the brain?
By blocking sites in the brain's synapse
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What is the function of thre fatty sheath surrounding some axons?
This acts as an electrical insulator by sheilding the neurone from the neighbouring cells and speeding up the electrical impulse
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What is a synapse?
The gap between two neurones
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How could the drug ecstasy increase the concentration of seretonin in the brain?
By blocking sites in the brain's synapse where seretonin is removed
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What is the function of thre fatty sheath surrounding some axons?
This acts as an electrical insulator by sheilding the neurone from the neighbouring cells and speeding up the electrical impulse
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What is a synapse?
The gap between two neurones
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How could the drug ecstasy increase the concentration of seretonin in the brain?
By blocking sites in the brain's synapse where seretonin is removed
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What is a reflex?
Reflexes are involuntary responses
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What is the function of thre fatty sheath surrounding some axons?
This acts as an electrical insulator by sheilding the neurone from the neighbouring cells and speeding up the electrical impulse
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What is a synapse?
The gap between two neurones
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How could the drug ecstasy increase the concentration of seretonin in the brain?
By blocking sites in the brain's synapse where seretonin is removed
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What is a reflex?
Reflexes are involuntary responses
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What is the function of thre fatty sheath surrounding some axons?
This acts as an electrical insulator by sheilding the neurone from the neighbouring cells and speeding up the electrical impulse
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What is a synapse?
The gap between two neurones
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How could the drug ecstasy increase the concentration of seretonin in the brain?
By blocking sites in the brain's synapse where seretonin is removed
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What is a reflex?
Reflexes are involuntary responses
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What are two ways in which simple reflexes could increase an animal's chance of survival?
Finding food and sheltering from predators
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What are effectors? Give two examples
All your muscles and glands, which respond to nervous impulses, eg. muscle cells and hormone secreting cells
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What is the role of the CNS?
It is a processing centre. It receives information from the receptors and coordinates a response
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How do neurone transmit information?
As electrical impulses
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What is an axon?
The long thread-like part of a nerve cell along which impulses are conducted from the cell body to other cells.
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What is the function of thre fatty sheath surrounding some axons?
This acts as an electrical insulator by sheilding the neurone from the neighbouring cells and speeding up the electrical impulse
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What is a synapse?
The gap between two neurones
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How could the drug ecstasy increase the concentration of seretonin in the brain?
By blocking sites in the brain's synapse where seretonin is removed
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What is a reflex?
Reflexes are involuntary responses
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What are two ways in which simple reflexes could increase an animal's chance of survival?
Finding food and sheltering from predators
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Give three examples of simple reflexes in humans
1)
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Other cards in this set

Card 2

Front

Name the two organs that make up the CNS

Back

The brain and the spinal chord

Card 3

Front

What do sensory neurones do?

Back

Preview of the front of card 3

Card 4

Front

Where do motor neurones carry signals to and from?

Back

Preview of the front of card 4

Card 5

Front

What are receptors? Give an example

Back

Preview of the front of card 5
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