Neco 2021 Biology Question 34
Practice objective / multiple choice question 34 from the 2021 Neco Biology examination.
In a simple reflex arc, the sensory neuron conducts an impulse over a distance of \(0.8\ \text{m}\) at a speed of \(50\ \text{m/s}\). The synaptic delay at the central ganglion is \(0.5\ \text{ms}\). The motor neuron then conducts the impulse over \(0.6\ \text{m}\) at \(60\ \text{m/s}\). Finally, the effector muscle requires \(20\ \text{ms}\) to develop a contraction after receiving the signal. Calculate the total time from the initial stimulus to the onset of muscle contraction, expressing your answer in milliseconds.
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About This Question
This is Neco 2021 Biology Question 34. It is one of the objective questions from the 2021 Neco Biology examination.
Difficulty level: Medium .
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