What is a radical neck dissection? when is it done?

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What is a radical neck dissection? The surgeon removes a block of tissue from the collarbone to the jaw and from the front to the back of the neck. The large muscle on the side of the neck that is used for rotating, flexing or extending the neck is also taken out, along with the major vein on the side of the neck. Sometimes, a less drastic operation, called a supraomohyoid neck dissection is done. This takes out only the lymph nodes, the tissue surrounding the nodes and a muscle at the front of the neck. Another technique, called a functional neck dissection, saves the muscles of the neck, taking out only the lymph nodes and tissues surrounding them.
What kind of incision is made with a radical neck dissection? The incision depends upon what the surgery is for. It can run from below the ear to the collarbone. Everything in the front of the neck on one side or on both sides may be removed. This may include the lymph nodes, blood vessels, nerves, and the salivary gland under the jawbone.

How does lack of physical activity cause heart disease?

Just how important is physical activity? 

Pretty important. We know that people who do not get regular exercise have about twice as many heart attacks as people who do. They also have higher cholesterol and triglyceride levels, higher blood pressure, and more excess weight than those who get regular aerobic exercise. No matter what the degree of overweight, sedentary people are more likely to develop Type 2 diabetes, and in a more severe form that is, their blood sugars will be higher.

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