Igcse Model Questions Vol1 2021 Biology Question 22
Practice objective / multiple choice question 22 from the 2021 Igcse Model Questions Vol1 Biology examination.
In a simple spinal reflex, the distance from a skin receptor to the spinal cord is 0.5 m and the sensory nerve conducts impulses at 50 m s\(^{-1}\). The synaptic delay in the spinal cord is 0.5 ms. The motor neuron travels 0.3 m to the effector muscle at 60 m s\(^{-1}\) and the muscle contraction latency is 5 ms. Calculate the total time from the stimulus reaching the receptor to the onset of muscle contraction, giving your answer in milliseconds.
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This is Igcse Model Questions Vol1 2021 Biology Question 22. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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