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What is one of the key functions of the liver?

  1. Production of adrenaline

  2. Detoxification of harmful substances

  3. Secretion of insulin

  4. Formation of red blood cells

The correct answer is: Detoxification of harmful substances

The liver plays a crucial role in detoxifying harmful substances, which makes detoxification one of its key functions. This process involves the breakdown and elimination of various toxins and metabolic waste products from the body. The liver filters the blood that comes from the digestive tract, allowing it to process nutrients while also neutralizing or converting toxins into less harmful substances, often preparing them for excretion via the kidneys or bile. This detoxification process is vital for maintaining homeostasis and protecting the body from potential damage caused by harmful agents such as drugs, alcohol, and metabolic byproducts. Consequently, the liver's ability to manage and mitigate these harmful substances underscores its importance in overall health and metabolism.