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.
For more information about Muscle, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with muscle
Jellyfish Robot Swims Like its Biological Counterpart
Jun 26, 2009 |
4.4 / 5 (9) |
1
(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 ...
Pork meat grown in the laboratory
Dec 01, 2009 |
4.5 / 5 (42) |
53
(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.
Study shows new brain connections form rapidly during motor learning
Medicine & Health / Neuroscience
Nov 29, 2009 |
4.9 / 5 (7) |
0
(PhysOrg.com) -- New connections begin to form between brain cells almost immediately as animals learn a new task, according to a study published this week in Nature. Led by researchers at the University of Cal ...
Microsoft Researchers Developing Muscle-Based PC Interface (w/ Video)
Technology / Computer Sciences
Oct 30, 2009 |
4.7 / 5 (10) |
2
(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 ...
Scientists grow mice heart muscle strip that beats
Oct 15, 2009 |
5 / 5 (7) |
0
(PhysOrg.com) -- Scientists have grown a piece of heart muscle - and then watched it beat - by using stem cells from a mouse embryo, a big step toward one day repairing damage from heart attacks.
Cyborg beetles to be the US military's latest weapon (w/ Video)
Oct 15, 2009 |
4.7 / 5 (29) |
35
(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 ...
Consciousness is the brain's Wi-Fi, resolving competing requests, study suggests
Medicine & Health / Neuroscience
Sep 30, 2009 |
3.8 / 5 (12) |
9
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 ...
Scientists discover clues to what makes human muscle age
Sep 30, 2009 |
5 / 5 (25) |
3
(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 ...
Insulin boost restores muscle growth in elderly
Sep 25, 2009 |
5 / 5 (7) |
1
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 ...
Stem cell surprise for tissue regeneration (w/ Podcast)
Jun 25, 2009 |
5 / 5 (10) |
0
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 ...
Excessive cola consumption can lead to super-sized muscle problems warn doctors
May 19, 2009 |
4.7 / 5 (23) |
7
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 ...
Researchers isolate first 'neuroprotective' gene in patients with amyotrophic lateral sclerosis
May 12, 2009 |
5 / 5 (1) |
0
A genetic variant that substantially improves survival of individuals with amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease, has been indentified by a consortium of researchers led by John Landers, ...
Killer catfish? Venomous species surprisingly common, study finds
Dec 10, 2009 |
not rated yet |
2
(PhysOrg.com) -- Name all the venomous animals you can think of and you probably come up with snakes, spiders, bees, wasps and perhaps poisonous frogs. But catfish?
Tiny molecule slows progression of Lou Gehrig's disease in mice
Dec 10, 2009 |
not rated yet |
0
Researchers at UT Southwestern Medical Center have found that a molecule produced naturally by muscles in response to nerve damage can reduce symptoms and prolong life in a mouse model of amyotrophic lateral sclerosis (ALS). ...
Muscle cell infusion shown to strengthen sphincters in animals
Dec 04, 2009 |
4.8 / 5 (4) |
1
A new study shows that muscle cells grown in the lab can restore an intestine's ability to squeeze shut properly. The work, performed in dogs and rats, might ultimately help treat patients with conditions such as gastric ...
