Its Nature, Symptoms and Treatment

LIKE all the other muscles of the human body, the heart muscle itself requires freshly oxygenated blood to live. It gets its supply from the coronary arteries, which sprout from the trunk of the arterial tree, the aorta, and divide into hundreds of smaller branches to feed back into the heart muscle some of the arterial blood that the heart has just previously pumped out.

As humans grow older, the innermost layer (intima) of the arteries, ordinarily a thin, smooth membrane, tends to roughen and thicken in a process...

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