EFA Exit Exam • Set 5 Question 3 of 30

What is the primary physiological cause of muscle cramps during physical exertion?

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Direct Answer

Option A: Over-exertion, dehydration, or lactic acid buildup due to inadequate oxygen

Muscle cramps occur when muscles are over-exerted in hot conditions, leading to electrolyte imbalance, dehydration, and lactic acid accumulation in muscle fibers.

All Options

Over-exertion, dehydration, or lactic acid buildup due to inadequate oxygen (Correct Answer)

Over-hydration and low salt intake

Lack of sleep

High carbohydrate diet

Detailed Explanation & Context

Muscle cramps occur when muscles are over-exerted in hot conditions, leading to electrolyte imbalance, dehydration, and lactic acid accumulation in muscle fibers.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Elementary First Aid (EFA).

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