The connective tissue covering that encloses the sarcolemma of an individual muscle fiber is called the a. epimysium, b. perimysium, c. endomysium, d. periosteum.

Video transcript

Hey, everyone. Let's take a look at this question together. The score is considered the basic functional unit of the muscle fiber. Which of the following is not a component of the sarcomere. Is it answer choice. A, the myosin filaments, answer choice B, the acting filaments, answer choice C, the Z discs or answer choice D the glycogen stores. Let's work this problem out together to try to figure out which of the following answer choices is not a component of the sarcomere. So in order to solve this question, we have to recall what we've learned about the sarcomere, specifically the components of the sarcomere. And we know that the sarcomere contains the myosin filaments as well as the act in filaments. And lastly, the sarcomere contains the Z discs and we know that the myosin and the acting filaments are responsible for muscle traction, whereas the Z discs are responsible for anchoring the filaments in place. So that means that the components of the sarcomere include the myosin filaments, the acting filaments and the Z diss. So we can eliminate answer choice A B and C since those are all the components of the sarcomere leaving us with answer choice D the glycogen stores, which is the correct answer since it is not a component of the sarcomere, since it is stored in the muscle fiber as a source of energy, but it is not a component of the sarcomere. I hope you found this video to be helpful. Thank you and goodbye.