Muscle

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  • Hollywood's Muscle Men

    msnbc.com 17 hours, 44 minutes ago

    From Mark Wahberg to Taylor Lautner, find out which sexy celebs have beefed up for movie roles.

  • Tea Party Still Flexing Muscles In Senate Races

    npr.org 17 hours, 1 minute ago

    Tuesday night there was another strong Tea Party showing in the Republican Senate primary in Texas. The expected nominee, David Dewhurst, was unable to avoid a runoff because of strong far right support for Ted Cruz. Melissa Block talks with Emily Ramshaw of the Texas Tribune about the result.

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  • Venice Muscle Beach — - via Daymix
  • This is Muscle Bridge which carries Marsh Road over Pannel's Brook. - via Daymix
  • SE3411 : Muscle Hill - via Daymix
  • Hot rods, muscle cars, - via Daymix
  • a historic muscle car. - via Daymix
  • Muscle Beach - via Daymix
  • The muscles on the body are - via Daymix
  • SE3411 : Muscle Hill Stables - via Daymix

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via Wikipedia
Muscle is a contractile tissue of animals 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.

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