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5.1 - 2016 January Q8

(a) The diagram shows a sensory neurone attached to part of a sense organ.
Picture
(i) On the diagram, write the names of the structures W, X, Y and Z. (4)

​(ii) State the function of structures W, X, Y and Z. (4)
  • W ..............................................................
  • X ..............................................................
  • Y ..............................................................
  • Z ..............................................................
​
(b) Neurones transmit impulses around the body. The table lists three types of neurone. Complete the table by giving the missing information. (3)
Picture
(c) The diagram shows a microscopic gap between two different neurones.
Picture
(i) Name the microscopic gap shown in the diagram. (1) 

(ii) Describe how an electrical impulse reaching the end of neurone A can produce an impulse in neurone B. (3)
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