Question

Digestion takes place in a long tube-like canal called the alimentary canal or the digestive tract. Choose the correct order in which food travels through these organs.

• A. Mouth $\to$ gullet $\to$ stomach $\to$ small intestine $\to$ large intestine
• B. Mouth $\to$ oesophagus $\to$ stomach $\to$ large intestine $\to$ small intestine
• C. Mouth $\to$ stomach $\to$ oesophagus $\to$ small intestine $\to$ large intestine
• D. Mouth $\to$ stomach $\to$ gullet $\to$ small intestine $\to$ large intestine

Answer 1

The correct option is A Mouth $\to$ gullet $\to$ stomach $\to$ small intestine $\to$ large intestine

The mouth is the beginning of the digestive tract; and, in fact, digestion starts here when taking the first bite of food. Chewing breaks the food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use.

Esophagus is located in your throat near your trachea (windpipe), the esophagus receives food from your mouth when you swallow. By means of a series of muscular contractions called peristalsis, the esophagus delivers food to your stomach. Cells in the lining of the stomach secrete a strong acid and powerful enzymes that are responsible for the breakdown process. When the contents of the stomach are sufficiently processed, they are released into the small intestine. Made up of three segments — the duodenum, jejunum, and ileum — the small intestine is a 22-foot long muscular tube that breaks down food using enzymes released by the pancreas and bile from the liver.

The colon is a 6-foot long muscular tube that connects the small intestine to the rectum. The large intestine is made up of the cecum, the ascending (right) colon, the transverse (across) colon, the descending (left) colon, and the sigmoid colon, which connects to the rectum. The large intestine is a highly specialized organ that is responsible for processing waste so that emptying the bowels is easy and convenient.

Therefore, the correct answer is option A.