Question

Distinguish between smooth muscles and skeletal muscles.

Answer 1

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.