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Which structure produces a liquid called chyme to help with the digestive process?
- A. 3
- B. 2
- C. 1
- D. 4
Correct Answer: A
Rationale: Structure 3 (stomach) produces chyme by mixing food with gastric juices. (Assuming typical diagram numbering; stomach is often 3.)
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A set of permanent teeth contains:
- A. 20 teeth
- B. 30 teeth
- C. 32 teeth
- D. 24 teeth
Correct Answer: C
Rationale: An adult human has 32 permanent teeth.
Which organ is retroperitoneal?
- A. liver
- B. ileum
- C. stomach
- D. pancreas
Correct Answer: D
Rationale: The pancreas is a retroperitoneal organ, located behind the peritoneum.
Match: Canines
- A. teeth used to grind meat
- B. teeth for tearing food
- C. teeth for crushing
- D. teeth for cutting
Correct Answer: B
Rationale: Canines are pointed teeth designed for tearing food, especially meat.
Where are the Islets of Langerhans found?
- A. Pancreas.
- B. Ileum.
- C. Colon.
- D. Liver.
Correct Answer: A
Rationale: The Islets of Langerhans are clusters of cells in the pancreas responsible for producing hormones like insulin and glucagon.
A 70-year-old male patient is experiencing symptoms of constipation, bloating, and abdominal discomfort. Physical examination reveals visible distension of the abdomen, and a contrast study shows dilation of the large intestine. Which of the following motility disorders is the most probable cause of the patient's symptoms?
- A. Excessive peristalsis in the large intestine
- B. Impaired segmentation in the small intestine
- C. Reduced peristalsis in the large intestine
- D. Excessive segmentation in the small intestine
Correct Answer: C
Rationale: Reduced peristalsis in the large intestine slows transit, leading to constipation, bloating, and dilation, as seen in the contrast study.