Waec Model Questions Vol1 2019 Biology Question 32
Practice objective / multiple choice question 32 from the 2019 Waec Model Questions Vol1 Biology examination.
A reflex arc consists of two neurons in series. The first neuron has a myelinated axon of diameter 20 µm that conducts impulses at 120 m s⁻¹; the second neuron has an unmyelinated axon of diameter 5 µm that conducts at 2 m s⁻¹. Each axon is 0.5 m long and the synapse between them introduces a delay of 0.5 ms. Determine the total time (in milliseconds) required for an impulse to travel from the sensory receptor to the effector muscle.
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This is Waec Model Questions Vol1 2019 Biology Question 32. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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