Which organ system is primarily responsible for processing nutrients and detoxifying harmful substances in the body?

• A. Respiratory system
• B. Skeletal system
• C. Nervous system
• D. Digestive system

Answer: (D)

Verified step by step guidance

1. Step 1: Begin by identifying the primary function of each organ system listed in the problem. For example, the respiratory system is responsible for gas exchange (oxygen and carbon dioxide), the skeletal system provides structural support and protection, and the nervous system controls and coordinates body activities.
2. Step 2: Recall the primary functions of the digestive system. The digestive system is responsible for breaking down food into nutrients, absorbing those nutrients into the bloodstream, and processing substances for energy and growth. It also plays a role in detoxifying harmful substances through organs like the liver.
3. Step 3: Understand the role of the liver within the digestive system. The liver processes nutrients absorbed from the digestive tract and detoxifies harmful substances, such as alcohol and drugs, making them less toxic or easier to eliminate.
4. Step 4: Compare the functions of the digestive system with the functions of the other systems listed. The digestive system is the only system directly involved in nutrient processing and detoxification.
5. Step 5: Conclude that the correct answer is the digestive system, as it is primarily responsible for processing nutrients and detoxifying harmful substances in the body.