Igcse Model Questions Vol1 2018 Biology Question 18
Practice objective / multiple choice question 18 from the 2018 Igcse Model Questions Vol1 Biology examination.
In a simple reflex arc, the sensory neuron is 0.8 m long and conducts impulses at 80 m s\(^{-1}\). The motor neuron is 0.6 m long and conducts at 60 m s\(^{-1}\). Each of the two synapses introduces a delay of 0.5 ms, and the muscle contracts 15 ms after the motor impulse arrives. Calculate the total time from the initial stimulus to the start of muscle contraction, in milliseconds.
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This is Igcse Model Questions Vol1 2018 Biology Question 18. It is one of the objective questions from the 2018 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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