Smooth muscle - Wikipedia
网页Smooth (soft) muscle is one of the three major types of vertebrate muscle tissue, the other being skeletal and cardiac muscle. Nonetheless, it is found in invertebrates as well and is controlled by the autonomic nervous system. It is non-striated, so-called because it has no sarcomeres and therefore no striations (bands or stripes).
Smooth Muscle - Definition, Function and Location | Biology
网页2019年10月4日 · Smooth muscle is a type of muscle tissue which is used by various systems to apply pressure to vessels and organs. Smooth muscle is composed of sheets or strands of smooth muscle cells. These cells have fibers of actin and myosin which run through the cell and are supported by a framework of other proteins. Smooth muscle contracts under certain ...
Smooth muscle: Structure, function, location - Kenhub
网页2023年10月30日 · Smooth muscle is a type of tissue found in the walls of hollow organs, such as the intestines, uterus and stomach. You can also find smooth muscle in the walls of passageways, including arteries and veins of the cardiovascular system. This type of involuntary non-striated muscle is also found in the tracts of the urinary, respiratory and ...
Anatomy, Smooth Muscle - StatPearls - NCBI Bookshelf
网页2023年7月17日 · Smooth muscle differs from skeletal muscle in function. Unlike skeletal muscle, smooth muscle is capable of maintaining tone for extended periods and often contracts involuntarily. At a cellular level, smooth muscle can be described as an involuntary, non-striated muscle.
Physiology, Smooth Muscle - StatPearls - NCBI Bookshelf
网页2023年8月14日 · The primary function of smooth muscle is contraction. Smooth muscle consists of two types: single-unit and multi-unit. Single-unit smooth muscle consists of multiple cells connected through connexins that can become stimulated in a synchronous pattern from only one synaptic input.
Smooth muscle | anatomy | Britannica
网页smooth muscle, muscle that shows no cross stripes under microscopic magnification. It consists of narrow spindle-shaped cells with a single, centrally located nucleus. Smooth muscle tissue, unlike striated muscle, contracts slowly and automatically.
10.7 Smooth Muscle Tissue – Anatomy & Physiology
网页Smooth muscle, so-named because the cells do not have visible striations, is present in the walls of hollow organs (e.g., urinary bladder), lining the blood vessels, and in the eye (e.g., iris) and skin (e.g., erector pili muscle). Smooth muscle displays involuntary control and can be triggered via hormones, neural stimulation by the ANS, and ...
10.8 Smooth Muscle - Anatomy and Physiology 2e - OpenStax
网页Smooth muscle is organized in two ways: as single-unit smooth muscle, which is much more common; and as multiunit smooth muscle. The two types have different locations in the body and have different characteristics. Single-unit muscle has its muscle fibers joined by gap junctions so that the muscle contracts as a single unit.
10.9: Smooth Muscle - Medicine LibreTexts
网页2023年2月24日 · Smooth muscle is organized in two ways: as single-unit smooth muscle, which is much more common; and as multiunit smooth muscle. The two types have different locations in the body and have different characteristics. Single-unit muscle has its muscle fibers joined by gap junctions so that the muscle contracts as a single unit.
2 Vascular Smooth Muscle Structure and Function - National …
网页Smooth muscle has two fundamental roles: 1) to alter the shape of an organ and 2) to withstand the force of an internal load presented to that organ.
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