Multiple Choice
Which of the following organs is NOT part of the digestive system?
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23. The Digestive System
Introduction to the Digestive System
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A bolus is found in which alimentary tract organ or organ(s)?
A
Small intestine.
B
Esophagus.
C
Stomach.
D
Both A and C are correct.
Verified step by step guidance1
Begin by understanding the term 'bolus'. In the context of the digestive system, a bolus refers to a mass of chewed food at the point of swallowing.
Identify the organs involved in the initial stages of digestion where a bolus is formed and transported. These include the mouth, pharynx, and esophagus.
Consider the role of the esophagus. It is the muscular tube that connects the pharynx to the stomach, and its primary function is to transport the bolus from the mouth to the stomach.
Evaluate the function of the stomach. Once the bolus reaches the stomach, it undergoes further digestion, transforming into chyme. Therefore, the bolus is present in the stomach before it becomes chyme.
Conclude that the bolus is found in the esophagus as it is transported to the stomach, and briefly in the stomach before it is processed into chyme. Thus, both the esophagus and stomach are correct locations for the bolus.
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