Magnesium is a mineral that occurs naturally in many foods, such as nuts and seeds, beans and other legumes, whole grains, and leafy greens. We need adequate amounts of magnesium for healthy muscle, nerve, and cardiovascular ...
Aug 14, 2024
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Imagine getting the benefits of gastric bypass surgery without going under the knife—a new class of compounds could do just that. In lab animals, these potential treatments reduce weight dramatically and lower blood glucose. ...
Mar 29, 2023
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The bacterial toxin botulinum toxin (BTX)—colloquially known as Botox—is probably known to most people as a remedy for wrinkles. But botulinum toxin can do even more: if it is injected into the forehead, for example, ...
Sep 22, 2022
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From the same mind whose research propelled the notion that "sitting too much is not the same as exercising too little," comes a groundbreaking discovery set to turn a sedentary lifestyle on its ear: The soleus muscle in ...
Sep 21, 2022
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Vitamin D plays an important role in the regulation of calcium and phosphorus absorption by an organism. It also helps keep the brain and immune system working. Researchers at the Federal University of São Carlos (UFSCar) ...
Dec 13, 2022
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Heart damage is common among patients hospitalized with COVID-19, leading many to wonder how the virus affects the heart. Now, researchers have found that the spike protein from the severe acute respiratory syndrome coronavirus ...
Jul 25, 2022
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Estrogen is known to play an important role in the protection of women's hearts, but once women are postmenopausal and estrogen levels drop, they are at an increased risk of a number of diseases and conditions, including ...
Mar 10, 2023
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A new study published in the journal Science reveals a unique form of cell communication that controls muscle repair. In damaged muscle, stem cells must work together with immune cells to complete the repair process, yet ...
Aug 4, 2022
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Revving up a process that slows down as we age may protect against atherosclerosis, a major cause of heart attacks and strokes. In findings published online today in Proceedings of the National Academy of Sciences (PNAS), ...
Mar 28, 2022
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To perform coordinated movements, we rely on special sensory neurons in our muscles and joints. Without them, the brain wouldn't know what the rest of our body was doing. A team led by Niccolò Zampieri has studied their ...
Dec 9, 2022
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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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