Question

multiple choice question
how many myofibrils and sarcomeres are found in a muscle fiber?
o each muscle fiber contains a single myofibril made of 10 - 15 sarcomeres.
o each muscle fiber contains many myofibrils, each made of many sarcomeres joined end to end.
o each muscle fiber contains a single myofibril made of a single, long sarcomere.
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Explanation:

Muscle fibers are composed of many myofibrils, and each myofibril is made up of numerous sarcomeres joined end - to - end. This is a fundamental structural aspect of muscle fibers in human anatomy and physiology.

Answer:

Each muscle fiber contains many myofibrils, each made of many sarcomeres joined end to end.