Igcse Model Questions Vol1 2022 Biology Question 8

Practice essay / theory question 8 from the 2022 Igcse Model Questions Vol1 Biology examination. This question covers Coordination .

Igcse Model Questions Vol1 2022 Biology Essay / Theory

Topic: Coordination

Question 8 IGCSE_MODEL_QUESTIONS_VOL1 • 2022 • BIOLOGY • essay

A 15‑year‑old student is training for a sprint race and is observed to have a sudden involuntary muscle twitch in the calf after a high‑intensity interval training session.

Question Parts

( a )

Identify the part of the nervous system responsible for rapid, voluntary movement of skeletal muscles and describe its pathway from the brain to the muscle.

( b )

The twitch is due to an accumulation of a particular ion in the extracellular fluid. Name the ion and explain how its concentration is normally regulated during intense exercise.

( c )

Discuss how the neuromuscular junction ensures precise timing of muscle contraction, including the role of neurotransmitter release, receptor activation, and removal.

( d )

The student’s coach wants to improve the student’s coordination. Propose two training methods that enhance neuromuscular coordination, explaining the physiological basis for their effectiveness.

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About This Question

This is Igcse Model Questions Vol1 2022 Biology Question 8. It is one of the essay questions from the 2022 Igcse Model Questions Vol1 Biology examination.

The question covers Coordination .

View More Igcse Model Questions Vol1 2022 Biology Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

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