Where are signals sent and what happens because of it?
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Card 17
Front
The heart is myogenic. What does this mean?
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Card 18
Front
What is a stimulus?
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Card 19
Front
Name the three main types of neurone
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Card 20
Front
What is a reflex?
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Card 21
Front
How can reflexes help protect the body?
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Card 22
Front
An animal responds to a stimulus in its environment. State the role of receptors and effectors in this response (2 marks)
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Card 23
Front
The human blink reflex is an involuntary response, which results in the automatic closing of the eyelids (a blink) when an object touches the surface of the eye. Describe the reflex arc involved in this response (4 marks)
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Card 24
Front
The knee jerk is another reflex response. You can test for it by tapping someone just below their patella (knee cap). Suggest why the absence of this response could indicate some damage to a person's CNS (1 mark)
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Card 25
Front
Polio is a virus that can cause damage to the CNS. In severe cases, the virus can damage motor neurons. Suggest and explain how this might lead to paralysis (3 marks)
