(a) Describe the anatomy of the thick filaments. (b) Describe its function.

Question:

(a) Describe the anatomy of the thick filaments.

(b) Describe its function.

Myofibril:

A muscle cell is also called a muscle fiber or a myocyte. The myocyte is made of numerous myofibrils. The myofibril, when viewed under an electron microscope shows alternate dark and light bands. The dark bands are called A bands (Anisotropic) and the light bands are called I bands (Anisotropic). The A band is that portion which contains only the thick filaments.

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Question (a):

The thick filaments of the muscle is made of several hundred myosin molecules. Each myosin molecule is made of two myosin filaments,...

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Myosin: Definition, Function & Structure

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Chapter 6 / Lesson 24
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Learn the structure of myosin and its function as a motor protein. Explore myosin's function with actin in muscle cells, and understand how this molecule functions as an ATPase.


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