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Which of the following structures allow the stomach to expand?

A.

Chief cells

B.

Microvilli

C.

Villi

D.

Rugae

Answer and Explanation

The Correct Answer is D

A. Chief cells: These are gastric gland cells that secrete pepsinogen, not involved in stomach expansion.

B. Microvilli: These are microscopic extensions in the small intestine for nutrient absorption, not expansion.

C. Villi: Like microvilli, villi are found in the small intestine, not the stomach.

D. Rugae: Rugae are folds in the stomach lining that allow it to expand when filled with food or liquid.


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Related Questions

Correct Answer is A

Explanation

A. Stomach: The esophagus carries food from the pharynx and empties it into the stomach via the lower esophageal sphincter.

B. Cecum: The cecum is part of the large intestine and is much further along in the digestive tract.

C. Common bile duct: This duct transports bile, not food. It is not directly connected to the esophagus.

D. Duodenum: The duodenum is the first part of the small intestine, which comes after the stomach, not directly after the esophagus.

Correct Answer is B

Explanation

A. pH 5.0: This is within normal range (urine pH typically ranges from 4.5 to 8.0).

B. Large amount of white blood cells (WBC): A high WBC count in urine indicates possible infection or inflammation, such as a urinary tract infection (UTI), and should be reported.

C. Amber color: Normal urine is straw to amber in color, depending on hydration status. This is not abnormal.

D. Occasional casts: Occasional hyaline casts may be seen in healthy individuals, especially after exercise. Persistent or abnormal casts (e.g., RBC casts) would be more concerning.

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