IGCSE Physical Education Paper-1: Specimen Questions with Answers 236 - 239 of 256

Question 236

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Describe how two environmental factors might result in a reduction in performance.

Explanation

  • Exposure to altitude leads to increased breathing rate, increased heart rate, giddiness, nausea, headache, sleeplessness and decrease in VO2 max. , mainly it reduces working capacity.
  • Performing in high temperature, humid conditions the circulation cannot both supply nutrients to muscle and regulate body temperature to the complete satisfaction of the body.

Question 237

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Why are red blood cells important to a sports performer?

Explanation

A performer in physical activity needs plenty of oxygen. Red blood cells are important in this regard because the haemoglobin in them will give body cells oxygen needed for respiration and take away carbon dioxide, the waste product of respiration.

Question 238

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If a performer sprains an ankle, part of the recommended treatment is to elevate the leg. How does this action help recovery?

Explanation

Elevation minimizes swelling this is how this action helps in recovery.

Question 239

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The diagram below shows a synovial hip joint.

Shows Diagram in Synovial Fluid, Femur, Head of Femur

Explanation

A. Cartilage

B. Ligament.

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