In vertebrate muscles, there are slow and fast muscle fibers. Fast muscle fibers contract rapidly, but are prone to fatigue. Slow muscle fibers have the property of slow contraction, but resist fatigue. Vertebrates use fast ...
Cell & Microbiology
May 22, 2019
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5
A new three-dimensional model of the skeletal muscles responsible for bird flight provides the most comprehensive and detailed picture of anatomy to date.
Veterinary medicine
Apr 30, 2019
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7
A new technique to spin starch fibers using Lego pieces could have future applications for lab-grown "clean" meat, according to a team of food scientists from Penn State and the University of Alabama.
Other
Mar 26, 2019
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567
Scientists have developed a method to boost the efficiency of CRISPR gene editing in Duchenne muscular dystrophy (DMD), according to a study that could have implications for optimizing gene therapies for other diseases.
Biotechnology
Mar 06, 2019
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581
The pull-up, an exercise dreaded by most, answers a basic question: are your muscles strong enough to lift your own body weight?
Materials Science
Apr 17, 2018
3
980
Researchers at the University of Pennsylvania have discovered how the Pacific midshipman fish can hum continuously for up to an hour in order to attract potential mates. The study, which is featured on the cover of the January ...
Plants & Animals
Jan 02, 2018
0
128
Inspired by how geometry influences physical systems such as soft matter, researchers at the University of Pennsylvania have revealed surprising insights into how the physics of molecules within a cell affect how the cell ...
Cell & Microbiology
Oct 25, 2017
0
24
A group of researchers at Instituto de Medicina Molecular (iMM) Lisboa has revealed the mechanism by which cellular nuclei reach their position within muscle cells. This discovery, now published in Nature Cell Biology, can ...
Cell & Microbiology
Sep 11, 2017
0
4
Since at least the 1920s, anecdotes and some studies have suggested that chimpanzees are "super strong" compared to humans, implying that their muscle fibers, the cells that make up muscles, are superior to humans.
Plants & Animals
Jun 26, 2017
11
514
Engineers at the University of California San Diego have developed a miniature device that's sensitive enough to feel the forces generated by swimming bacteria and hear the beating of heart muscle cells.
Optics & Photonics
May 15, 2017
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1367
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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