News tagged with muscle
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 |
4.8 / 5 (38) |
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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 |
4.7 / 5 (23) |
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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 |
3.8 / 5 (18) |
7
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First test-tube hamburger ready this fall: researchers
The world's first "test-tube" meat, a hamburger made from a cow's stem cells, will be produced this fall, Dutch scientist Mark Post told a major science conference on Sunday.
Feb 20, 2012 |
4.6 / 5 (14) |
27
New 'soft' motor made from artificial muscles
The electrostatic motor, used more than 200 years ago by Benjamin Franklin to rotisserie a turkey, is making a comeback in a promising new design for motors that is light, soft, and operates without external electronic controllers.
Feb 15, 2012 |
4.8 / 5 (9) |
0
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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 |
4.3 / 5 (9) |
3
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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 |
5 / 5 (7) |
0
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 |
4.3 / 5 (6) |
3
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Need muscle for a tough spot? Turn to fat stem cells
(PhysOrg.com) -- Stem cells derived from fat have a surprising trick up their sleeves: Encouraged to develop on a stiff surface, they undergo a remarkable transformation toward becoming mature muscle cells. ...
Jan 27, 2012 |
5 / 5 (5) |
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Why humans choose running over walking
Other than Olympic race walkers, people generally find it more comfortable to run than walk when they start moving at around 2 meters per second – about 4.5 miles per hour.
Jan 05, 2012 |
4.8 / 5 (5) |
7
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Light now in sight: Control of a 'blind' neuroreceptor with an optical switch
When nerve cells communicate with one another, specialized receptor molecules on their surfaces play a central role in relaying signals between them. A collaborative venture involving teams of chemists based at Ludwig-Maximilians-Universitat ...
Jan 10, 2012 |
5 / 5 (4) |
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Scientists create potent molecules aimed at treating muscular dystrophy
While RNA is an appealing drug target, small molecules that can actually affect its function have rarely been found. But now scientists from the Florida campus of The Scripps Research Institute have for the first time designed ...
Feb 22, 2012 |
5 / 5 (4) |
0
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New sensation: Phones that let you feel the world
(AP) -- Sure, today's phones can deliver the sound of a heartbeat. But how would you like to actually feel the throbbing?
Electronics / Consumer & Gadgets
Jan 12, 2012 |
5 / 5 (3) |
2
Smooth muscle cells created from patients' skin cells
(PhysOrg.com) -- Scientists have created cells which make up the walls of blood vessels; research could lead to new treatments and better screening for cardiovascular disease.
Jan 17, 2012 |
5 / 5 (3) |
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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 |
5 / 5 (3) |
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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
Wikipedia.
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