When a stationary droplet containing a solute in a volatile solvent evaporates, the flow in the droplet can assemble into complex patterns. Researchers have examined such transport in evaporating sessile droplets in solvents. ...
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
0
1367
MIT engineers have developed a microfluidic device that replicates the neuromuscular junction—the vital connection where nerve meets muscle. The device, about the size of a U.S. quarter, contains a single muscle strip and ...
Engineering
Aug 3, 2016
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1886
A key building block of life, actin is one of the most abundant and highly conserved proteins in eukaryotic cells.
Cell & Microbiology
Mar 24, 2013
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0
Many robotic designs take nature as their muse: sticking to walls like geckos, swimming through water like tuna, sprinting across terrain like cheetahs. Such designs borrow properties from nature, using engineered materials ...
Engineering
Aug 30, 2012
2
0
There's no doubt that exercise does a body good, including strengthening and toning our muscles. But how exactly does exercise make this happen?
Biochemistry
Oct 20, 2023
0
73
Declawing house cats to keep them from scratching people and furniture is controversial—and even banned in some countries and areas in the U.S.—but the practice is not limited to house cats. In a new study, researchers ...
Plants & Animals
Jul 31, 2023
7
400
Actin filaments—protein structures critical to living movement from single cells to animals—have long been known to have polarity associated with their physical characteristics, with growing "barbed" and shrinking "pointed" ...
Cell & Microbiology
Jun 8, 2023
0
133
Senescent cells, often referred to as "zombie" cells, have long been associated with aging and disease. However, a new study from the Center for Regenerative Therapies Dresden (CRTD) at TU Dresden adds to a growing body of ...
Plants & Animals
Apr 14, 2023
1
153
Different types of exercise encourage the formation of different types of muscle fibers, or the cells that make up your muscles. Slow twitch muscle fibers support endurance activities like long-distance running, while fast ...
Cell & Microbiology
Mar 24, 2023
0
146
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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