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Smooth muscle differs from skeletal muscle and cardiac muscle in terms of structure, function, regulation of contraction, and excitation-contraction coupling. However, smooth muscle tissue tends to demonstrate greater elasticity and function within a larger length-tension curve than striated muscle .
The muscular system is an organ system consisting of skeletal, smooth, and cardiac muscle. It permits movement of the body, maintains posture, and circulates blood throughout the body. [ 1 ] The muscular systems in vertebrates are controlled through the nervous system although some muscles (such as the cardiac muscle ) can be completely autonomous.
Different skeletal muscle types: A: fusiform. B: unipennate. C: bipennate. (PCS: physiological cross-section) Muscles may also be described by the direction that the muscle fibres run, in their muscle architecture. Fusiform muscles have fibres that run parallel to the length of the muscle, and are spindle-shaped. [19]
Only skeletal and smooth muscles are part of the musculoskeletal system and only the muscles can move the body. Cardiac muscles are found in the heart and are used only to circulate blood; like the smooth muscles, these muscles are not under conscious control. Skeletal muscles are attached to bones and arranged in opposing groups around joints. [8]
Multiunit smooth muscle tissues innervate individual cells; as such, they allow for fine control and gradual responses, much like motor unit recruitment in skeletal muscle. Smooth muscle is found within the walls of blood vessels (such smooth muscle specifically being termed vascular smooth muscle) such as in the tunica media layer of the large ...
It’s been a cold start to the year for North Texas, as a series of arctic blasts hit Dallas-Fort Worth in mid-January. At its most frigid, the temperature dipped to 11 degrees on Jan. 15 ...
Muscle effectors are bundles rather than single smooth muscle cells that are connected by gap junctions which allow electrotonic spread of activity between cells. A multiplicity of transmitters are utilized by autonomic nerves, and co-transmission occurs often involving synergistic actions of the co-transmitters, although pre- and post ...
Snow’s BBQ, based in the tiny town of Lexington, Texas, and only open on Saturdays, is widely regarded as one of the best barbecue joints in America. Both Texas Monthly and Southern Living named ...