How does smooth muscle appear different at the cellular level than skeletal and cardiac muscle

Smooth muscle:

At cellular level these muscles are cylindrical in appearance. There cells are unbranched. These are non striated.

Skeletal muscles:

These Muscles at cellular level appears as cylindrical and also they are unbranched. These are striated at cellular level.

Cardiac muscle:

These muscles are like skeletal muscles and smooth muscles in the sense of their cylindrical nature but these muscles are branched in contrast to others. These are striated.

Explanation:

Other differences are attached with this answer please find attachment.

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.