MICROANATOMY

Detailed explanation-1: -Smooth muscle, found in the walls of the hollow internal organs such as blood vessels, the gastrointestinal tract, bladder, and uterus, is under control of the autonomic nervous system. Smooth muscle cannot be controlled consciously and thus acts involuntarily.

Detailed explanation-2: -Smooth muscle can be found in all the organ systems below: Gastrointestinal tract. Cardiovascular: Blood vessel and lymphatic vessels.

Detailed explanation-3: -Smooth muscle – located in various internal structures including the digestive tract, uterus and blood vessels such as arteries.

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.

Detailed explanation-5: -Vascular smooth muscle cells (VSMCs) constitute the major cells in the media layer of arteries, and are critical to maintain the integrity of the arterial wall.