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9 marksThe Skeletal System

CSEC Human and Social Biology · January 2009 · Paper 2 · Question 12(c)

A cricketer suffering from a damaged biceps brachii muscle is unable to bend his arm at the elbow.

Explain, in terms of muscular contraction, tendons, and antagonistic bone action, why this biceps injury prevents bending of the elbow.

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Other parts of this question

  1. 12(a)(i)State two functions of bones and one function of cartilage in the human body.[3 marks]
  2. 12(a)(ii)Name the type of synovial joint present at (a) the shoulder and (b) the knee.[2 marks]
  3. 12(b)Predict the functional consequences and symptoms resulting from the loss of articular cartilage in the knee.[3 marks]
  4. 12(d)Explain why a fracture to the shoulder bone would restrict or impair movement in the lower arm.[3 marks]

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