Related topics: muscular dystrophy , skeletal muscle
Muscle
hideMuscle (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.
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News tagged with muscle
Pork meat grown in the laboratory
Dec 01, 2009 |
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(PhysOrg.com) -- Scientists from Eindhoven University in The Netherlands have for the first time grown pork meat in the laboratory by extracting cells from a live pig and growing them in a petri dish.
Cyborg beetles to be the US military's latest weapon (w/ Video)
Oct 15, 2009 |
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(PhysOrg.com) -- A team of scientists funded by the US Defense Advanced Research Projects Agency (DARPA) have implanted miniature neural and muscle stimulation systems into beetles to enable their flight to ...
Scientists discover clues to what makes human muscle age
Sep 30, 2009 |
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(PhysOrg.com) -- A study led by researchers at the University of California, Berkeley, has identified critical biochemical pathways linked to the aging of human muscle. By manipulating these pathways, the ...
Excessive cola consumption can lead to super-sized muscle problems warn doctors
May 19, 2009 |
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Doctors have issued a warning about excessive cola consumption after noticing an increase in the number of patients suffering from muscle problems, according to the June issue of IJCP, the International Journal of Clinical Pr ...
Study confirms that cannabis is beneficial for multiple sclerosis
Medicine & Health / Neuroscience
Dec 04, 2009 |
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Cannabis can reduce spasticity in multiple sclerosis (MS) patients. A systematic review, published in the open access journal BMC Neurology, found that five out six randomized controlled trials reported a reduction in spa ...
Muscle: 'Hard to build, easy to lose' as you age
Sep 11, 2009 |
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(PhysOrg.com) -- Have you ever noticed that people have thinner arms and legs as they get older? As we age it becomes harder to keep our muscles healthy. They get smaller, which decreases strength and increases the likelihood ...
Traditional stretching doesn't help, studies find
Jul 06, 2009 |
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Arvelle White lifts weights three or four times a week. Before he even looks at a dumbbell, though, he hops on a treadmill and runs for 20 minutes.
Mercedes to Produce a Fully Electric Gullwing
Aug 07, 2009 |
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(PhysOrg.com) -- While it may be inherently wasteful to enjoy luxury cars, it can still be fun to look at -- and even drive -- them. And, if you are concerned about the environmental impact of such cars, you ...
Stem cell surprise for tissue regeneration (w/ Podcast)
Jun 25, 2009 |
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Scientists working at the Carnegie Institution's Department of Embryology, with colleagues, have overturned previous research that identified critical genes for making muscle stem cells. It turns out that ...
Microsoft Researchers Developing Muscle-Based PC Interface (w/ Video)
Technology / Computer Sciences
Oct 30, 2009 |
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(PhysOrg.com) -- Microsoft researches have teamed up with the University of Washington and the University of Toronto to develop a muscle-controlled interface that allows for hands-free, gesture-driven interaction ...
Ancient muscle tissue extracted from 18 million year old fossil
Other Sciences / Archaeology & Fossils
Nov 05, 2009 |
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(PhysOrg.com) -- Scientists have extracted organically preserved muscle tissue from an 18 million years old salamander fossil. The discovery by researchers from University College Dublin, the UK and Spain, ...
Consciousness is the brain's Wi-Fi, resolving competing requests, study suggests
Medicine & Health / Neuroscience
Sep 30, 2009 |
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Your fingers start to burn after picking up a hot plate. Should you drop the plate or save your meal? New research suggests that it is your consciousness that resolves these dilemmas by serving as the brain's ...
Australian stroke victim walks again - with help of botox
Jun 20, 2009 |
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An Australian stroke victim paralysed for more than 20 years has walked again thanks to anti-wrinkle drug botox, in a case hailed as extraordinary by his medical team.
Jellyfish Robot Swims Like its Biological Counterpart
Jun 26, 2009 |
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(PhysOrg.com) -- "Jellyfish are one of the most awesome marine animals, doing a spectacular and psychedelic dance in water," explain engineers Sung-Weon Yeom and Il-Kwon Oh from Chonnam National University ...
Insulin boost restores muscle growth in elderly
Sep 25, 2009 |
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When most people think of insulin, they think of diabetes — a disease that arises when, for one reason or another, insulin can't do the critical job of helping the body process sugar. But the hormone has another, less well-known ...
