These are about 8 nm in diameter and, being the thinnest of the cytoskeletal filaments, are also called microfilaments. (In skeletal muscle fibers they are called thin filaments.) Some functions of actin filaments: 1  form a band just beneath the plasma membrane that.  provides mechanical strength to the cell.
Muscle tissue varies with function and location in the body. In mammals the three types are: skeletal or striated muscle; smooth or non-striated muscle; and cardiac muscle, which is sometimes known as semi-striated.n vertebrates, there is a third muscle tissue recognized: 1  Cardiac muscle (myocardium), found only in the heart, is a striated muscle similar in structure to skeletal muscle but not subject to voluntary control.
Non striated muscle: The muscle which show no cross striations are called non striated muscles or unstriped muscles. They look smooth, hence are called smooth muscles.Their activity of these muscles are not under the control of the will of the animal, so they are known as involuntary muscles.triated Muscle: The muscle which shows cross striations are called striated muscles or striped muscles. They are mostly attached to the bones by tendons and so called skeletal muscles. Their activity is under the control of will.