Which are the main organs of the digestive system?

Which are the main organs of the digestive system?

• A. Mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, anal canal
• B. Teeth, tongue, salivary glands, liver, gallbladder, pancreas, vermiform appendix
• C. Heart, lungs, kidneys
• D. Brain, spinal cord, nerves

Answer: (A)

The digestive system’s main pathway runs through the alimentary canal from the mouth to the anus, where food is chewed, swallowed, digested, nutrients are absorbed, and waste is eliminated. The correct set of organs follows this continuous tube: mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, and anal canal. These are the primary structures through which digestion and absorption occur, from entry to exit. Other options mix in non-digestive systems (like heart, lungs, kidneys or brain and nerves) or include only accessory organs (such as teeth, tongue, salivary glands, liver, gallbladder, pancreas, and appendix). While some of these assist digestion, they are not the main digestive tract through which food passes, so they aren’t the best answer for “main organs.”

The digestive system’s main pathway runs through the alimentary canal from the mouth to the anus, where food is chewed, swallowed, digested, nutrients are absorbed, and waste is eliminated. The correct set of organs follows this continuous tube: mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, and anal canal. These are the primary structures through which digestion and absorption occur, from entry to exit.

Other options mix in non-digestive systems (like heart, lungs, kidneys or brain and nerves) or include only accessory organs (such as teeth, tongue, salivary glands, liver, gallbladder, pancreas, and appendix). While some of these assist digestion, they are not the main digestive tract through which food passes, so they aren’t the best answer for “main organs.”