_____ are the "garbage trucks" of the blood system.

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High-density lipoproteins are often referred to as the "good" cholesterol because they help remove excess cholesterol from the bloodstream and transport it back to the liver for processing and disposal. This role is akin to that of a garbage truck in the blood system. Low-density lipoproteins, on the other hand, can contribute to the buildup of cholesterol in the arteries and are sometimes called "bad" cholesterol. Saturated and monounsaturated fats are types of dietary fat, and while they can affect cholesterol levels, they are not directly involved in the blood system's cleansing process.

_____ Are the "Garbage Trucks" of the Blood System