Question

The 'C' shaped structure of the alimentary canal is
(a) Stomach
(b) Oesophagus
(c) Duodenum
(d) Vermiform appendix

Answer 1

Hint: This ‘C’ shaped structure is present at the junction of the stomach and the small intestine. It carries out the movement of undigested food towards the small intestine through the peristaltic movement.

Complete answer:
The 'C' shaped structure of the alimentary canal is the duodenum. The alimentary canal is also known as the human digestive system. It runs from the mouth up to the anus. The small intestine consists of three structures: duodenum, jejunum, and ileum. The duodenum is a 'C' shaped structure present at the junction of the stomach and the small intestine, that is between the stomach and the jejunum.

Additional Information: -The duodenum receives bile juice from the liver through the bile duct and pancreatic Juice from the pancreas true pancreatic duct.
-Pancreatic juice and bile juice poured in the duodenum help in further digestion of food.
-The digestion of protein, fat, carbohydrate, and nucleic acids are completed in the duodenum of the small intestine.
-The process of absorption also begins here since the food is converted into the simplest form.
-The small intestine is well designed for absorption as it is long and highly coiled.
-It shows finger-like projections called villi which in turn is lined by cell projections called microvilli.
-Villi increases the surface area for absorption and it has a rich supply of blood vessels through tactics surrounding the villi.
-Once absorption of the nutrients reaches the blood vessels they are assimilated by different body parts for its own working.
So, the correct answer is,’Duodenum’.

Note: -The various parts of the alimentary canal are the mouth or buccal cavity. It includes teeth, tongue, and salivary gland. esophagus or food pipe, stomach, the small intestine, the large intestine, rectum, and the anus.
-The duodenum receives bile juice from the liver through the bile duct and pancreatic Juice from the pancreas true pancreatic duct.
-The complete digestion of carbohydrates, proteins, fats, and nucleic acid occurs in the duodenum of the small intestine.