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.
This is a high magnification view of a striated muscle type ! Remember, cardiac and skeletal are striated types! Muscle types are also described as voluntary or involuntary. These terms imply some muscles are controlled voluntarily while others are not.Think about this for a moment! You can control the muscles moving your fingers but you cannot consciously control contractions of muscles in your heart or stomach.his is a high magnification view of a striated muscle type ! Remember, cardiac and skeletal are striated types! Muscle types are also described as voluntary or involuntary. These terms imply some muscles are controlled voluntarily while others are not.