Igcse Model Questions Vol1 2017 Biology Question 8

Practice essay / theory question 8 from the 2017 Igcse Model Questions Vol1 Biology examination. This question covers Coordination, Nervous system, Reflex arcs, Myelination .

Igcse Model Questions Vol1 2017 Biology Essay / Theory

Topics: Coordination Nervous system Reflex arcs Myelination

Question 8 IGCSE_MODEL_QUESTIONS_VOL1 • 2017 • BIOLOGY • essay

A 20‑year‑old athlete cuts the tip of his index finger while playing football. The doctor explains that the rapid withdrawal of the finger is an example of a reflex action.

Question Parts

( a )

Outline the complete neural pathway of the myotatic (stretch) reflex that could be used to withdraw the finger from a painful stimulus.

( b )

Explain why the reflex withdrawal is faster than a voluntary movement that would achieve the same result.

( c )

A patient with multiple sclerosis shows noticeably slowed finger‑withdrawal reflexes. Discuss how loss of myelin affects nerve‑impulse conduction and the observable reflex response.

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About This Question

This is Igcse Model Questions Vol1 2017 Biology Question 8. It is one of the essay questions from the 2017 Igcse Model Questions Vol1 Biology examination.

The question covers Coordination, Nervous system, Reflex arcs, Myelination .

View More Igcse Model Questions Vol1 2017 Biology Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

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