Question

which of the following statements is true? a. the basic contractile unit for skeletal and smooth muscle is the sarcomere. b. troponin is a protein found in skeletal, but not smooth, muscle. c. the mechanism mediating the release of calcium from the sarcoplasmic reticulum is the same in both smooth and skeletal muscle.

Answer 1

c. Both skeletal and smooth muscle use the same mechanism to release calcium from the sarcoplasmic reticulum.

Does troponin affect smooth muscle?

This discovery puts the troponin proteins in a position to function as a regulator of smooth muscle contraction by showing that they are linked to actin filaments within smooth muscle tissues.

Protein molecules called troponins are found in skeletal and cardiac muscle. Troponins are absent from smooth muscle cells. Troponin I, T, and C are the three different forms of troponins.

In smooth muscle, there is no troponin complete protein. Calmodulin functions as troponin in smooth muscles, activates myosin light chain kinase, and results in myosin head attachment to actin.

A particular class of protein called troponin is present in the heart's muscles. Blood often does not contain troponin. Troponin is released into the bloodstream when the heart muscles are harmed.

To learn more about smooth muscle refer to:

https://brainly.com/question/13903265

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