Ravi steps on a sharp stone. The nerve from his big toe to his spinal cord is 1.1 m long, and the…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Ravi steps on a sharp stone. The nerve from his big toe to his spinal cord is m long, and the impulse travels at m/s. How many milliseconds does the message take to reach the spinal cord? Give your answer to one decimal place.
Need a reminder? The key ideaShow
A neuron has dendrites, which pick up a message, a cell body, an axon, which carries the message as an electrical impulse, and nerve endings. At a synapse a chemical carries the message to the next neuron, in one direction only. Time along a nerve: .
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Time in seconds. s.
Step 2. Milliseconds. ms.
Answer: about ms.
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