Muscle cell: Difference between revisions
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Created page with " Muscle cells are also known as myocytes or muscle fibres<ref>Albert D, et al (2012). Dorland's illustrated medical dictionary. (32nd ed.). Philadelphia, PA: Saunders/Elsevi..." |
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Muscle cells are also known as myocytes or muscle fibres<ref>Albert D, et al (2012). Dorland's illustrated medical dictionary. (32nd ed.). Philadelphia, PA: Saunders/Elsevier. p. 321.</ref>. These cells develop from myoblasts and are found in [[Muscle|muscle tissue]]. | |||
The microstructure of thses cells is unusual and new terminology had to be determined to describe their structures: | The microstructure of thses cells is unusual and new terminology had to be determined to describe their structures: | ||
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The sarcoplasm of muscle cells is mostly composed of [[Myofibril|myofibrils]], which, at the same time, are composed of three types of myofilaments<ref>Saladin, K (2012). Anatomy &amp;amp;amp; Physiology: The Unity of Form and Function (6th ed.). New York: McGraw-Hill. pp. 403–405.</ref>: | The sarcoplasm of muscle cells is mostly composed of [[Myofibril|myofibrils]], which, at the same time, are composed of three types of myofilaments<ref>Saladin, K (2012). Anatomy &amp;amp;amp;amp; Physiology: The Unity of Form and Function (6th ed.). New York: McGraw-Hill. pp. 403–405.</ref>: | ||
*[[Myosin|Myosin]]- a thick, dark filament that makes up the A band. | |||
*[[Actin filaments|Actin_filaments]]- a thin, light filament that makes up the I band. | |||
*[[Titin|Titin]]- an elastic filament. | |||
These three types of filament will work together to bring about [[Muscle contraction|muscle contraction]]. | These three types of filament will work together to bring about [[Muscle contraction|muscle contraction]].<br> | ||
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=== References === | === References === | ||
<references /><br> | <references /><br> | ||
Revision as of 13:04, 30 November 2015
Muscle cells are also known as myocytes or muscle fibres[1]. These cells develop from myoblasts and are found in muscle tissue.
The microstructure of thses cells is unusual and new terminology had to be determined to describe their structures:
| Feature | Equivalent in normal cells |
|---|---|
| sarcoplasm | cytoplasm |
| sarcoplasmic reticulum | smooth endoplasmic reticulum |
| sarcosome | mitochondrion |
| sarcolema | cell membrane |
The sarcoplasm of muscle cells is mostly composed of myofibrils, which, at the same time, are composed of three types of myofilaments[2]:
- Myosin- a thick, dark filament that makes up the A band.
- Actin_filaments- a thin, light filament that makes up the I band.
- Titin- an elastic filament.
These three types of filament will work together to bring about muscle contraction.