Question

Muscle X and muscle Y are of same size , but muscle X is capable of much finer control than muscle Y . which of the following is likely to be true of muscle X? 1. it is controlled by more neurons than Y. 2. it contains fewer motor units than Y. 3. it is controlled by fewer neurons than Y. 4. each of its motor units consists of more cells than the motor units of muscle Y.

Answer 1

may be 4 or 1
as more nerve cells have better response
/
more motor units have a lot of capability

Answer 2

Dear Student,

◆ Answer -

(1) it is controlled by more neurons than Y.

● Explanation -

• Voluntary control of muscles depends upon number of motor units in the muscle & total number of neurons acting at the site.
• More the number of neurons, finer the motor control of that site.
• As muscle X exhibits more finer control, it must be having lot of individual neurons acting on it.

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