Neco Model Questions Vol1 2019 Biology Question 29
Practice objective / multiple choice question 29 from the 2019 Neco Model Questions Vol1 Biology examination.
In a simple reflex arc, the sensory neuron travels 0.5 m to the spinal cord at a conduction speed of 80 m s⁻¹, the interneuron covers 0.2 m at 40 m s⁻¹, and the motor neuron travels 0.6 m at 60 m s⁻¹. Each synapse (sensory‑interneuron, interneuron‑motor, and motor‑muscle) introduces a delay of 0.5 ms. Calculate the total time from stimulus to muscle contraction in milliseconds. Does this total time satisfy a requirement that the reflex be completed within 50 ms?
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About This Question
This is Neco Model Questions Vol1 2019 Biology Question 29. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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