Neco Model Questions Vol1 2025 Biology Question 8

Practice essay / theory question 8 from the 2025 Neco Model Questions Vol1 Biology examination. This question covers Coordination, Nervous system, Reflex arc, Cerebellum, Neuromuscular fatigue .

Neco Model Questions Vol1 2025 Biology Essay / Theory
Topics: Coordination Nervous system Reflex arc Cerebellum Neuromuscular fatigue
Question 8 NECO_MODEL_QUESTIONS_VOL1 • 2025 • BIOLOGY • essay

A 15‑year‑old sprinter abruptly changes direction after 20 m of a 100‑m sprint, relying on rapid neuromuscular adjustments to maintain speed and balance.

Question Parts

( a )
Outline the complete neural pathway that begins with the activation of muscle‑spindle receptors in the hamstring and ends with the corrective contraction of the quadriceps that re‑aligns the body. Include all major neurons, synapses and the type of signal transmitted at each stage.
( b )
Discuss the role of the cerebellum in fine‑tuning this rapid change of direction. In your answer, give two specific mechanisms by which the cerebellum improves movement accuracy.
( ) Error detection and correction through the spinocerebellar pathways.
( ) Timing and coordination of agonist‑antagonist muscle activity via Purkinje cell output.
( c )
Explain how muscular fatigue, developed after repeated sprints, can impair neuromuscular coordination during such rapid directional changes. Provide two physiological changes that occur with fatigue and how each affects the neural control of movement.

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About This Question

This is Neco Model Questions Vol1 2025 Biology Question 8. It is one of the essay questions from the 2025 Neco Model Questions Vol1 Biology examination.

The question covers Coordination, Nervous system, Reflex arc, Cerebellum, Neuromuscular fatigue .

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