The meat you eat, if you're a carnivore, comes from animal muscles. But animals are composed of a lot more than just muscle. They have organs and bones that most Americans do not consume. They require food, water, space and ...
Plants & Animals
Jul 08, 2019
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Scientists from Sechenov University, conjointly with their fellow Chinese and American researchers, have examined the latest advances in the use of skeletal muscle progenitor cells, specifying the core challenges inherent ...
General Physics
Jul 01, 2019
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For many of us, eating a meal containing meat is a normal part of daily life. But if we dig deeper, some sobering issues emerge.
Other
Jun 24, 2019
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The human body is held together by an intricate cable system of tendons and muscles, engineered by nature to be tough and highly stretchable. An injury to any of these tissues, particularly in a major joint like the shoulder ...
Bio & Medicine
Apr 24, 2019
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204
What if doctors had a remote control that they could use to steer a patient's own cells to a wound to speed up the healing process? Although such a device is still far from reality, researchers reporting in the ACS journal ...
Bio & Medicine
Apr 17, 2019
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25
Just as controlled-release medications slowly dole out their cargo after they experience a pH change in the body, implanted "artificial muscles" could someday flex and relax in response to light illuminating the skin. In ...
Materials Science
Apr 02, 2019
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47
Biotechnologists at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) have developed a system to accurately measure muscle weakness caused by structural changes in muscle tissue. The new method allows muscle function ...
Optics & Photonics
Nov 28, 2018
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5
As if you needed another reason to enjoy cocoa products, a recent study by Tufts researchers found that epicatechin, a flavonoid found in cocoa, certain fruits and beans, and green tea, has protective anti-aging effects in ...
Cell & Microbiology
Nov 02, 2018
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25
A team of researchers with the University of London, University College London and the University of Botswana has found that the wildebeest has extremely efficient muscles. In their paper published in the journal Nature, ...
A team of Brigham and Women's Hospital researchers have developed a way to bioprint tubular structures that better mimic native vessels and ducts in the body. The 3-D bioprinting technique allows fine-tuning of the printed ...
Biochemistry
Aug 24, 2018
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644
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.
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