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5 marksNervous Co-ordination

CAPE Biology Unit 2 · 2007 · Paper 2 · Question 7(a)(iii)

Describe briefly the sequential steps occurring in the transmission of an impulse across a synapse and its reception at the post-synaptic membrane.

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Other parts of this question

  1. 7(a)(i)Draw a large, clear section through a synapse, labelling the pre- and post-synaptic membranes.[3 marks]
  2. 7(a)(ii)Label FOUR additional structures on your drawing of a synapse.[2 marks]
  3. 7(b)(i)Clarify the role and mode of action of synapses in the event where waking cries of a baby in the bedroom gradually penetrate awareness.[3 marks]
  4. 7(b)(ii)Clarify the role and mode of action of synapses when holding onto a painfully hot dish because it is prized china, overriding the reflex to drop it.[3 marks]
  5. 7(c)Discuss FOUR points of difference between the operation of the nervous and endocrine systems in response to stimuli.[4 marks]

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