MUSCLE PHYSIOLOGY

Detailed explanation-1: -At a cellular level, smooth muscle can be described as an involuntary, non-striated muscle. Smooth muscle consists of thick and thin filaments that are not arranged into sarcomeres giving it a non-striated pattern.

Detailed explanation-2: -Non-striated muscles are smooth and devoid of striations. Found in the hollows of internal organs such as the stomach, intestines, and urine bladder, among other places. They are also known as involuntary muscles because their activation is not under the control of the human.

Detailed explanation-3: -At a cellular level, smooth muscle functions as an involuntary non-striated muscle. Smooth muscle contains thick and thin filaments that do not arrange into sarcomeres, resulting in a non-striated pattern. On microscopic examination, it appears homogenous.

Detailed explanation-4: -Smooth muscle is an involuntary non-striated muscle, so-called because it has no sarcomeres and therefore no striations (bands or stripes). It is divided into two subgroups, single-unit and multiunit smooth muscle. Within single-unit muscle, the whole bundle or sheet of smooth muscle cells contracts as a syncytium.