Sunday, March 11, 2012

Comparison of different types of muscles



Striated (skeletal) muscles
Non-striated (smooth or visceral) muscles
Cardiac muscles
1.        Striations present
Absent
Absent
2.        Voluntary in action
Involuntary
Involuntary
3.        Muscle fibres are long and cylindrical with blunt ends
Muscle fibres are long spindle shaped with pointed ends
Muscle fibres are short, cylindrical with flat ends
4.        Fibres are unbranched
Unbranched
Branched
5.        Fibres are multi-nucleated
Uninucleated
Uninucleated
6.        Sarcoplasmic reticulum is well developed
Poorly developed
Poorly developed
7.        Sarcomeres present
Absent
Present
8.        Intercalated discs absent
Absent
Present
9.        Numerous mitochondria and glycogen granules are present
Less mitochondria and glycogen granules are present
Numerous mitochondria and glycogen granules are present
10.     Seen attached to skeleton
Seen in internal organs
Seen in the walls of heart
11.     E.g. Biceps muscle
E.g. intestinal muscles
E.g. heart muscles


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