An HMO requires a referral from the primary care physician before they will cover a visit to a specialist. A podiatrist is considered a specialist.
The leading cause of deaths in the united sates are heart diseases followed by cancer.
As per the latest researches about 30.2 million people in the United States suffer from heart diseases like heart attack, faulty heart valves, atherosclerosis, heart failure, hypertension, arteriosclerosis etc. And this number keeps on rising every year making it accountable for one in every four deaths caused in the country followed by cancer.
The common causes may include higher blood pressure, more cholesterol levels in the blood, obesity, smoking, alcoholism, tobacco consumption etc. Cancer is another leading cause affecting nearly 5.3 percent of the population making United States one of the most effected country by the disease.
To know more about Cancer refer to the link below
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The answer to your question is B, Myosin and actin do not fully detach, so the muscle cannot relax.
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All muscle cells share four main properties that distinguish them from other cells. These are Excitability, Contractility, Extensibility and Elasticity.
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So its acquired immunity and the cells responsible are the B lymphocytes that produces antibodies against the virus. Memory is keep since first encounter of the virus by the immune system by way of the antibodies that was initially produced. The antibodies are there already, which makes it fast to act upon when expose again.