Question:
Differentiate between, striated, unstriated and cardiac muscles the basis of their structure and site/location in the body.
Answer:
| S.No. | Striated (Voluntary muscles) |
Unstriated (Involuntary muscles) |
Cardiac muscles |
|---|---|---|---|
| (i) | Shape–It is long, narrow, cylindrical and unbranched. |
Shape–It is long and tapered | Shape–It is cylindrical, having branched containing strips. |
| (ii) | Muscle fibre is 2.4μm long and 10-30μm wide |
Muscle fibre is 100-200μm long and 10μm wide |
Muscle fibre is 50-100μm long and 20μm wide. |
| (iii) | They are found in the hands and feet |
They are found in walls of digestive tract, bladder and vessels. |
They are found in the heart. |
| (iv) | They are in the form of bundles |
They appear as clusters of tubules. | They are in the form of a network. |
| (v) | Sarcolemma is found in them | Sarcolema is not found in them | Plasma membrane is found with sarcolema in them. |
| (vi) | They are voluntary | They are involuntary | They are involuntary |
| (vii) | Many nuclei are found in them which are towards preiphery |
One nucleus is found in each cell in them which are in the middle |
One or more nuclei are found in the central part in them |
| (viii) | They get tired quickly | They do not get tired | They are always active and never get tired |
| (ix) | Bandages are present in them | Bands are absent in the cells | Only transverse bands are found. |
| (x) | They are unbranched | They are unbranched | They are connected with each other. |
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