Which body system is primarily responsible for nutrient absorption in the digestive process?

Which body system is primarily responsible for nutrient absorption in the digestive process?

• A. Excretory
• B. Digestive
• C. Immune
• D. Reproductive

Answer: (B)

The digestive system is primarily responsible for nutrient absorption during the digestive process. This system includes various organs such as the mouth, esophagus, stomach, small intestine, large intestine, and accessory organs like the liver and pancreas. Once food is ingested and broken down into smaller molecules, the small intestine plays a critical role in allowing these nutrients to pass through its lining into the bloodstream. The walls of the small intestine are lined with tiny, finger-like projections called villi, which significantly increase the surface area for absorption. This allows for the efficient uptake of essential nutrients like carbohydrates, proteins, fats, vitamins, and minerals, which are necessary for the body's energy and overall functioning. In contrast, the excretory system is involved in waste removal, the immune system protects against pathogens, and the reproductive system is focused on reproduction and not involved in nutrient absorption. Thus, the digestive system is the key player in the absorption of nutrients from food.

The digestive system is primarily responsible for nutrient absorption during the digestive process. This system includes various organs such as the mouth, esophagus, stomach, small intestine, large intestine, and accessory organs like the liver and pancreas.

Once food is ingested and broken down into smaller molecules, the small intestine plays a critical role in allowing these nutrients to pass through its lining into the bloodstream. The walls of the small intestine are lined with tiny, finger-like projections called villi, which significantly increase the surface area for absorption. This allows for the efficient uptake of essential nutrients like carbohydrates, proteins, fats, vitamins, and minerals, which are necessary for the body's energy and overall functioning.

In contrast, the excretory system is involved in waste removal, the immune system protects against pathogens, and the reproductive system is focused on reproduction and not involved in nutrient absorption. Thus, the digestive system is the key player in the absorption of nutrients from food.