Why Is the Innervation Ratio in the Ocular Muscles One

question 1

Multiple Choice

Why is the innervation ratio in the ocular muscles one motor axon per 23 muscle fibers,whereas in the gastrocnemius muscle,it is one motor axon per 1,000 muscle fibers?

• A) There are more nerves in the upper body than in the lower extremities.
• B) The ocular muscles require finer control than moving the legs.
• C) The innervation ratio has to do with the overall size of the muscle- the bigger the muscle, the fewer the muscle fibers per motor axon.
• D) The gastrocnemius muscle contracts much harder than the ocular muscles do.
• E) There are fewer muscle fibers in the gastrocnemius muscle than in the ocular muscles.

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