Question

Every human body has an uncountable number of this basic unit of a muscle known as the: (1 point)

Answer 1

I believe the correct answer from the choices listed above is the first option. Every human body has an uncountable number of this basic unit of a muscle known as muscle fibers. A muscle fiber is composed of many fibrils, which give the cell its striated appearance. Hope this answers the question.

Answer 2

Known as the muscle fibers