Cardiology

Restoring heart elasticity in a heart failure model

Patients with heart failure often have shortness of breath and become fatigued quickly. They frequently suffer from water retention, heart palpitations, and dizziness. The condition can be triggered by a combination of elevated ...

Cardiology

Researchers discover an unexpected regulator of heart repair

A study using mice by scientists at the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA reveals that cardiac muscle cells play a pivotal role in determining how the heart heals following ...

Diabetes

New discovery about diabetes may reduce the risk of organ failure

A new research result from Aarhus University and the Steno Diabetes Center Aarhus has identified how diabetes affects stem cells residing in muscle to form fat and connective tissue. According to the researchers, the discovery ...

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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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