Which body system plays a key role in digestion by processing nutrients and producing bile?

• A. The respiratory system
• B. The liver
• C. The heart
• D. The kidneys

Answer: (B)

The liver plays a key role in digestion by processing nutrients and producing bile. It is essential for metabolizing carbohydrates, fats, and proteins, converting these macronutrients into forms that the body can utilize. The liver’s production of bile is crucial for the digestion of fats; bile emulsifies fats in the small intestine, allowing for their efficient breakdown and absorption. Additionally, the liver stores important nutrients, regulates blood sugar levels, and detoxifies substances, further supporting the body’s digestive processes. This intricate system of nutrient processing and bile production positions the liver as a vital organ in the digestive system, ensuring that nutrients from food are properly utilized by the body.