digestive tract begins at the ____ and ends at the ____.
A)stomach; large intestine
B)pharynx; rectum
C)lower esophageal sphincter; rectum
D)mouth; anus

Question

Quizplus · Accepted Answer

The digestive tract begins at the mouth, where food enters the body, and ends at the anus, where waste is eliminated from the body. Choice A is incorrect because while the stomach is part of the digestive tract, it is not the end of it; the large intestine and rectum come after the stomach. Choice B is incorrect because while the pharynx is part of the digestive system, it is not the beginning of the digestive tract; the mouth is where digestion actually begins. Choice C is incorrect because the lower esophageal sphincter is a valve that controls the flow of food from the esophagus into the stomach, but it is not the start of the digestive tract. The digestive tract begins at the mouth, where food enters the body, and ends at the anus, where waste leaves the body. The other options are incorrect because the stomach is not the end of the digestive tract (it is followed by the small intestine and then the large intestine), the pharynx is not part of the digestive tract (it is only involved in swallowing), and the lower esophageal sphincter is just a valve that prevents stomach acid from flowing back up into the esophagus (it is not a part of the digestive tract itself).

Digestive Tract Begins at the ____ and Ends at the ____

Digestive Tract Begins at the and Ends at the