Distinguish between smooth muscles and skeletal muscles.
Smooth Muscles | Skeletal Muscles |
1. These muscles are found in the walls of visceral organs and blood vessels. | These muscles are found attached to the bone. |
2. Each muscle cell is spindle shaped or fusiform and unbranched | They are cylindrical in shape and branched. |
3. They have a single, centrally located nucleus. | They contain several nuclei that are shifted to the periphery due to presence of large number of myofibrils. |
4. Striations are absent in smooth muscles. | Striations are present in skeletal muscles. |
5. They undergo slow and sustained involuntary contractions. | They show quick and strong voluntary contractions. |
6. They contain lesser myosin are more actin as compared to skeletal muscles. | They contain more myosin and lesser actin as compared to smooth muscles. |