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.
a voluntary muscle is a muscle that move when you tell it to Muscles in our hands (skeletal muscle) are called voluntary, because these muscles act according to the impulses (â¦ orders) given by our conscious brain. Heart (cardiac muscle) is an example of an involuntary muscle.It works all the time with impulses from our brain stem, which is involuntary. Some more examples of voluntary muscles in our body are muscles of the chest, neck, abdomen, and legs. Involuntary muscles include the muscles of the digestive system.--- Skeletal muscles, like biceps (the muscles that flex your forearm/wrist toward your shoulder) are voluntary muscles.These muscles will not flex unless you think about flexing them, and your brain sends that signal to your arm.nvoluntary muscles include the muscles of the digestive system. --- Skeletal muscles, like biceps (the muscles that flex your forearm/wrist toward your shoulder) are voluntary muscles. These muscles will not flex unless you think about flexing them, and your brain sends that signal to your arm.