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3 marksCoordination and Control

CSEC Human and Social Biology · January 2016 · Paper 2 · Question 4(b)(i)

A diagram depicts a knee jerk spinal reflex arc.

Identify the regions or components labelled A, B, and C in Figure 4.

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Other parts of this question

  1. 4(a)(i)State the function of each of the parts labelled A, B, and C in Figure 3.[3 marks]
  2. 4(a)(ii)Explain what occurs within the eye that leads to the development of glaucoma.[2 marks]
  3. 4(b)(ii)Explain the mechanism of a knee jerk spinal reflex.[4 marks]
  4. 4(c)Determine whether Sheena's action is voluntary or involuntary, and explain the key differences between voluntary and involuntary actions.[3 marks]

More practice: the rest of this paper · more Coordination and Control questions · all CSEC Human and Social Biology past papers