Problem:

Question 1: Muscle tone is the result of:

a) asynchronous firing of motor units

b) incomplete tetanus.

c) multiple muscle twitches.

d) multiple motor unit summation.

Question 2: Under normal circumstances, at the level of single skeletal muscle fibers, there are:

a) all-or-nonr responeses

b) graded contractions, depending on stimulus input

c) rapid spasmodic contractions, resulting in the main contraction

Question 3: The muscles of the eye need to make precise small motor movements. Therefore, you would find large motor units in the eye, while you would find small motor units in postural muscle such as the thigh.

a) True

b) False

Any help would be greatly appreciated!