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Figure 3 shows the muscular system of a gymnast - Edexcel - GCSE Physical Education - Question 2 - 2019 - Paper 1
Question 2
Figure 3 shows the muscular system of a gymnast. (a) Examine the antagonistic muscle action taking place at the elbow in Figure 3 that allows the gymnast to achieve... show full transcript
Worked Solution & Example Answer:Figure 3 shows the muscular system of a gymnast - Edexcel - GCSE Physical Education - Question 2 - 2019 - Paper 1
Step 1
Examine the antagonistic muscle action taking place at the elbow in Figure 3 that allows the gymnast to achieve this position.
Answer
The gymnast needs to achieve extension at the elbow to maintain her position. This is facilitated by the biceps muscle, which acts as the agonist and contracts, while the triceps muscle acts as the antagonist, relaxing to allow the biceps to shorten. The antagonistic pair is crucial in achieving a controlled range of movement.
Step 2
Step 3
Explain, using examples, two functions of the skeletal system that help the gymnast move her lower body into this position.
Answer
Function 1: The skeleton provides joints, allowing for a wide range of movements. For instance, the knee joint enables the gymnast to bend and position her legs correctly.
Function 2: The skeletal system also serves as a lever system for muscle attachment. For example, the quadriceps are essential in extending the knee to straighten the legs, supporting the gymnast's movement into the desired position.