What is the primary function of the digestive system?

What is the primary function of the digestive system?

• A. Breaks down food into nutrients and wastes
• B. Filters blood for wastes
• C. Regulates body temperature
• D. Produces hormones for growth

Answer: (A)

The digestive system exists to turn the food you eat into usable nutrients for the body's cells and into waste that must be eliminated. Food is mechanically broken down and chemically broken down by enzymes and acids, then most nutrients are absorbed through the lining of the small intestine into the bloodstream and the lymphatic system to nourish tissues, including the skin. The remaining material moves into the large intestine, where water is reabsorbed and solid waste is formed for elimination. This process supplies energy, building blocks for repair and growth, and helps regulate overall metabolism that supports skin health and healing. Other systems have different jobs—filtering blood for wastes is done by the kidneys, regulating body temperature involves the skin and circulation, and producing growth-related hormones is part of the endocrine system. So, the primary function of digestion is to break down food into nutrients the body can use and wastes that must be expelled.

The digestive system exists to turn the food you eat into usable nutrients for the body's cells and into waste that must be eliminated. Food is mechanically broken down and chemically broken down by enzymes and acids, then most nutrients are absorbed through the lining of the small intestine into the bloodstream and the lymphatic system to nourish tissues, including the skin. The remaining material moves into the large intestine, where water is reabsorbed and solid waste is formed for elimination. This process supplies energy, building blocks for repair and growth, and helps regulate overall metabolism that supports skin health and healing. Other systems have different jobs—filtering blood for wastes is done by the kidneys, regulating body temperature involves the skin and circulation, and producing growth-related hormones is part of the endocrine system. So, the primary function of digestion is to break down food into nutrients the body can use and wastes that must be expelled.