Cardiology

New target identified for repairing the heart after heart attack

Billions of cardiac muscle cells are lost during a heart attack. The human heart cannot replenish these lost cells, so the default mechanism of repair is to form a cardiac scar. While this scar works well initially to avoid ...

Genetics

New gene correction therapy for Duchenne muscular dystrophy

Duchenne type muscular dystrophy (DMD) is the most common hereditary muscular disease among children, leaving them wheelchair-bound before the age of 12 and reducing life expectancy. Researchers at Technical University of ...

Medical research

The future of human healing lies in the brain of a starfish

The incredible benefits of stem cell therapy have been widely known for decades. It can alleviate the pain of arthritis, and help patients heal exponentially faster after surgery. But stem cell therapies are prohibitively ...

Health

The serious consequence of exercising too much, too fast

Every 365.25 days, when the Earth completes a full orbit around the Sun, we humans have the opportunity to hit the reset button and become fitter, finer versions of ourselves. As usual for January, social media is humming ...

Muscle

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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