Neco 2024 Biology Question 22
Practice objective / multiple choice question 22 from the 2024 Neco Biology examination.
The axon of a myelinated motor neuron is 1.2\,m long and conducts impulses at \(80\ \text{m s}^{-1}\). An unmyelinated motor neuron of the same length conducts at \(20\ \text{m s}^{-1}\). Both neurons are stimulated simultaneously. (a) Calculate the time taken for the impulse to reach the synaptic terminal for each neuron. (b) If the synaptic delay at the neuromuscular junction is \(0.5\ \text{ms}\), which neuron will cause the muscle fibre to contract first and by how many milliseconds?
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About This Question
This is Neco 2024 Biology Question 22. It is one of the objective questions from the 2024 Neco Biology examination.
Difficulty level: Medium .
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