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2 marksThe Skeletal System

CSEC Human and Social Biology · May/June 2017 · Paper 2 · Question 3(a)(ii)

Figure 2 illustrates the bones, muscles, and joints of the human upper arm.

State which letters represent the origin and the insertion of the triceps muscle.

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Other parts of this question

  1. 3(a)(i)Identify which letter in Figure 2 represents the triceps muscle.[1 mark]
  2. 3(a)(iii)Identify the type of joint labelled D.[1 mark]
  3. 3(a)(iv)State the type of movement permitted by joint D.[1 mark]
  4. 3(b)(i)Describe how the biceps and triceps act antagonistically during biceps curls to achieve flexion and extension of the arm.[4 marks]
  5. 3(b)(ii)Define 'muscle tone' and suggest how having good muscle tone benefits joints.[2 marks]
  6. 3(c)(i)Advise Diana on the correct physical technique for lifting heavy objects safely.[3 marks]
  7. 3(c)(ii)Suggest a consequence or injury that could occur if Diana fails to maintain correct posture while lifting.[1 mark]

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