News tagged with muscle
Burmese cats to benefit from genetic test for newly discovered mutation
Burmese cats can inherit a muscle weakness, called Burmese hypokalaemia, which is caused by low levels of blood potassium.
May 24, 2012 |
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Mexican experts find ancient blood on stone knives
(AP) - Traces of blood and fragments of muscle, tendon, skin and hair found on 2,000-year-old stone knives have given researchers the first conclusive evidence that the obsidian blades were used for human sacrifice so long ...
Other Sciences / Archaeology & Fossils
May 03, 2012 |
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Biophysics: Order in chaos
The process of skeletal muscle contraction is based around protein filaments sliding inside sarcomeres — the structural units of muscle fiber. Inside each sarcomere is a set of filament motors, which ...
May 03, 2012 |
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Squid and zebrafish cells inspire camouflaging smart materials
Researchers from the University of Bristol have created artificial muscles that can be transformed at the flick of a switch to mimic the remarkable camouflaging abilities of organisms such as squid and zebrafish.
May 02, 2012 |
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Research shows rats have best bite of rodent world
Scientists at the University of Liverpool have found that mice and rats have evolved to gnaw with their front teeth and chew with their back teeth more successfully than rodents that 'specialise' in one or ...
Apr 27, 2012 |
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Unusual protein helps regulate key cell communication pathway
Charged atoms, or ions, move through tiny pores, or channels, embedded in cell membranes, generating the electrical signals that allow cells to communicate with one another. In new research, scientists have ...
Apr 23, 2012 |
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Whether grasping Easter eggs or glass bottles -- this robotic hand uses tact
Researchers at Saarland University together with associates in Bologna and Naples have developed a robotic hand that can accomplish both tasks with ease and yet including the actuators is scarcely larger than ...
Mar 30, 2012 |
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Exercise has benefits, even when it's done in space
Astronauts have been taking part in short spaceflight missions since 1961. They have only recently begun to spend significantly longer times in space, with missions extending for months, since the days of the Russian Mir ...
Space & Earth / Space Exploration
Mar 22, 2012 |
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How muscle cells seal their membranes
Every cell is enclosed by a thin double layer of lipids that separates the distinct internal environment of the cell from the extracellular space. Damage to this lipid bilayer, also referred to as plasma membrane, ...
Mar 14, 2012 |
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Human origins traced to worm fossil in Canada
(PhysOrg.com) -- Most primitive known vertebrate and therefore the ancestor of all descendant vertebrates, including humans, discovered.
Other Sciences / Archaeology & Fossils
Mar 05, 2012 |
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Research reveals first evidence of hunting by prehistoric Ohioans
Cut marks found on Ice Age bones indicate that humans in Ohio hunted or scavenged animal meat earlier than previously known. Dr. Brian Redmond, curator of archaeology at The Cleveland Museum of Natural History, was lead author ...
Other Sciences / Archaeology & Fossils
Mar 01, 2012 |
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Study says T. rex has most powerful bite of any terrestrial animal
Research at the University of Liverpool, using computer models to reconstruct the jaw muscle of Tyrannosaurus rex, has suggested that the dinosaur had the most powerful bite of any living or extinct terres ...
Other Sciences / Archaeology & Fossils
Feb 28, 2012 |
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Immortal worms defy aging
Researchers from The University of Nottingham have demonstrated how a species of flatworm overcomes the ageing process to be potentially immortal.
Feb 27, 2012 |
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Crocodiles rock the treadmill for research
Crocodiles have been put through their paces on a treadmill as part of a James Cook University research project to help determine which muscles they use to breathe.
Feb 24, 2012 |
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New research provides clear answer to debate on dinosaur posture
(PhysOrg.com) -- Research published today (22nd February) provides, for the first time, a clear answer to the debate as to whether Triceratops and other extinct creatures took on a more mammal-like or more ...
Other Sciences / Archaeology & Fossils
Feb 23, 2012 |
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Muscle
Muscle (from Latin musculus, diminutive of mus "mouse") is the contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. Muscle cells contain contractile filaments that move past each other and change the size of the cell. They are classified as skeletal, cardiac, or smooth muscles. Their function is to produce force and cause motion. Muscles can cause either locomotion of the organism itself or movement of internal organs. Cardiac and smooth muscle contraction occurs without conscious thought and is necessary for survival. Examples are the contraction of the heart and peristalsis which pushes food through the digestive system. Voluntary contraction of the skeletal muscles is used to move the body and can be finely controlled. Examples are movements of the eye, or gross movements like the quadriceps muscle of the thigh. There are two broad types of voluntary muscle fibers: slow twitch and fast twitch. Slow twitch fibers contract for long periods of time but with little force while fast twitch fibers contract quickly and powerfully but fatigue very rapidly.
For more information about Muscle, read the full article at
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