Final answer:
The correct matches are: Pharynx - Epiglottis; Small Intestine - Villi; Stomach - Pyloric sphincter; Gallbladder - Biliary tree. The pharynx contains the epiglottis, while the pyloric sphincter is part of the stomach, not the pharynx.
Step-by-step explanation:
To match the organs of the digestive system to the structures they contain:
- Pharynx does not contain the pyloric sphincter; that is part of the stomach. The correct match would be Pharynx - Epiglottis.
- Small Intestine indeed contains structures known as villi, which are small finger-like projections that increase the surface area for absorption.
- Stomach does not contain the biliary tree; that is part of the liver's network of ducts. The proper structure associated with the stomach is the pyloric sphincter, which regulates the passage of food into the small intestine.
- Gallbladder is connected to the biliary tree, not the pharynx. The gallbladder stores bile produced by the liver, which is delivered to the small intestine via the biliary tree.
Therefore, the correct matches are:
- Pharynx - Epiglottis
- Small Intestine - Villi
- Stomach - Pyloric sphincter
- Gallbladder - Biliary tree