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Q: Which is the longest part of the digestive system in the human body ?
  • A. pancreatic duct
  • B. small intestine
  • C. large intestine
  • D. gullet
Correct Answer: Option B - The small intestine is longest and narrow tubular part of the alimentary canal. Small intestines have three parts–Duodenum, jejunum and ileum. The duodenum is short (20-25 cm long) and wider anterior part into which stomach empties. The jejunum is coiled middle part which is 0.8 to 1.5 meters in length while ileum is the longest terminal part with 3 to 3.5 meters in length.
B. The small intestine is longest and narrow tubular part of the alimentary canal. Small intestines have three parts–Duodenum, jejunum and ileum. The duodenum is short (20-25 cm long) and wider anterior part into which stomach empties. The jejunum is coiled middle part which is 0.8 to 1.5 meters in length while ileum is the longest terminal part with 3 to 3.5 meters in length.

Explanations:

The small intestine is longest and narrow tubular part of the alimentary canal. Small intestines have three parts–Duodenum, jejunum and ileum. The duodenum is short (20-25 cm long) and wider anterior part into which stomach empties. The jejunum is coiled middle part which is 0.8 to 1.5 meters in length while ileum is the longest terminal part with 3 to 3.5 meters in length.