The old adage "use it or lose it" tells us: if you stop using your muscles, they'll shrink. Until recently, scientists thought this meant that nuclei—the cell control centers that build and maintain muscle fibers—are ...
Jan 25, 2019
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A previously unknown autoimmune muscle disease involving sudden onset of debilitating muscle pain and weakness has been identified by researchers at Washington University School of Medicine in St. Louis. The syndrome easily ...
Apr 29, 2019
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Anyone who has ever torn or injured a muscle knows that swelling, redness, and pain soon follow the injury: classic signs of inflammation. Inflammation is the body's natural response to promote healing, but prolonged, excess ...
Oct 1, 2018
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Duchenne muscular dystrophy (DMD) is caused by a genetic mutation and affects one in every 5,000 boys born. Because the affected gene is on the X chromosome, girls are carriers of the mutant gene but develop the disease only ...
Sep 27, 2022
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An international team led by The University of Texas at Dallas has discovered that ordinary fishing line and sewing thread can be cheaply converted to powerful artificial muscles.
Feb 20, 2014
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University of Illinois researchers determined that an adult stem cell present in muscle is responsive to exercise, a discovery that may provide a link between exercise and muscle health. The findings could lead to new therapeutic ...
Feb 6, 2012
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Blocking the activity of a single protein in old mice for one month restores mass and strength to the animals' withered muscles and helps them run longer on a treadmill, according to a study by researchers at the Stanford ...
Dec 10, 2020
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As we age, the function and regenerative abilities of skeletal muscles deteriorate, which means it is difficult for the elderly to recover from injury or surgery. New work from Carnegie's Michelle Rozo, Liangji Li, and Chen-Ming ...
Jul 5, 2016
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In the first-ever study of its kind, San Francisco State University and California State University, Fullerton researchers found that elite women weightlifters have the same amount—and in some cases more—of the muscle ...
Mar 27, 2019
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An international team of researchers has identified genomic mutations for Carey-Fineman-Ziter (CFZS) syndrome, a very rare congenital myopathy (inherited muscle disorder) characterized by facial weakness, a small or retracted ...
Jul 6, 2017
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Skeletal muscle is a form of striated muscle tissue existing under control of the somatic nervous system. It is one of three major muscle types, the others being cardiac and smooth muscle. As its name suggests, skeletal muscle is linked to bone by bundles of collagen fibers known as tendons.
Skeletal muscle is made up of individual components known as muscle fibers. These fibers are long, cylindrical, multinucleated cells composed of actin and myosin myofibrils repeated as a sarcomere, the basic functional unit of the cell and responsible for skeletal muscle's striated appearance and forming the basic machinery necessary for muscle contraction. The term muscle refers to multiple bundles of muscle fibers held together by connective tissue.
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