Digestion of food is an important function of the animal body. In animals like lions, cows, humans, etc., the process involves use of various organs starting from the mouth and ending with the anus. The longest part of this canal is known as the ________.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. small intestine.
The small intestine is the longest part of the alimentary canal in animals like humans, lions, and cows. The small intestine is the primary organ for digestion and absorption of food.
- The alimentary canal is a one-way system that starts at the mouth and ends at the anus.
- The small intestine is made up of three parts: the duodenum, jejunum, and ileum.
- The small intestine mixes food with digestive juices from the pancreas, liver, and intestine.
- The walls of the small intestine absorb water and digested nutrients into the bloodstream.
- Waste products from digestion move into the large intestine.