Neco Model Questions Vol1 2018 Biology Question 31
Practice objective / multiple choice question 31 from the 2018 Neco Model Questions Vol1 Biology examination.
During a rapid hand movement, a motor neuron sends an impulse over a distance of \(0.5\ \text{m}\) to a skeletal muscle fibre. The impulse travels at a conduction velocity of \(50\ \text{m\,s}^{-1}\) and incurs a synaptic delay of \(0.5\ \text{ms}\) at the neuromuscular junction. After the muscle contracts, a sensory neuron carries a feedback signal over \(0.3\ \text{m}\) at \(40\ \text{m\,s}^{-1}\) with the same synaptic delay. Calculate the total time from the initial stimulus to the arrival of the feedback signal at the brain, in milliseconds. Then state whether this total time is less than the \(20\ \text{ms}\) limit required for smooth coordinated movement.
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About This Question
This is Neco Model Questions Vol1 2018 Biology Question 31. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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