Skeletal and cardiac muscle are similar in which of the following ways?
A)both muscles contain type I,IIa,and IIx fibers
B)both muscles are under voluntary control
C)both muscles contain fibers that are branched
D)both muscles are composed of striated fibers containing actin and myosin

Question

Quizplus · Accepted Answer

Both skeletal and cardiac muscle are composed of striated fibers containing actin and myosin. Choice A is incorrect because type IIx fibers are found only in skeletal muscle, while type I fibers are typically absent in cardiac muscle. Choice B is incorrect because cardiac muscle is under involuntary control. Choice C is incorrect because cardiac muscle fibers are not branched to the same extent as skeletal muscle fibers.

Skeletal and Cardiac Muscle Are Similar in Which of the Following