Waec Model Questions Vol1 2019 Biology Question 26
Practice objective / multiple choice question 26 from the 2019 Waec Model Questions Vol1 Biology examination.
In a simple stretch reflex, a sensory neuron carries the impulse from a muscle spindle to the spinal cord over a distance of 0.5 m at a conduction velocity of 80 m/s. The impulse then travels through an interneuron for 0.2 m at 60 m/s, and finally through a motor neuron for 0.5 m at 70 m/s. Each synapse in the reflex arc introduces a delay of 0.5 ms. Calculate the total time (in milliseconds) from the initial stimulus to the onset of muscle contraction.
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This is Waec Model Questions Vol1 2019 Biology Question 26. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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