Nokea
The aqueous component of pancreatic juice is produced by the
- A. intercalated duct.
- B. pancreatic islets.
- C. acinar cells.
- D. duodenum.
Correct Answer: A
Rationale: The correct answer is A: intercalated duct. The aqueous component of pancreatic juice is produced by intercalated ducts, which are responsible for secreting bicarbonate-rich fluid to neutralize the acidic chyme entering the duodenum. Other choices are incorrect because pancreatic islets (B) secrete hormones like insulin and glucagon, acinar cells (C) secrete digestive enzymes, and the duodenum (D) is the first part of the small intestine where pancreatic juice is delivered but not where it is produced.
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Regarding pancreatic secretion:
- A. Trypsin is secreted in the active form.
- B. CCK stimulates the secretion of bicarbonate.
- C. Secretin stimulates the secretion of enzymes.
- D. Chemotrypsinogen is activated by trypsin.
Correct Answer: D
Rationale: Correct Answer: D
Rationale:
1. Chemotrypsinogen is the inactive precursor of chymotrypsin.
2. Trypsin activates chemotrypsinogen to form active chymotrypsin.
3. This activation occurs in the small intestine, enabling protein digestion.
Summary:
A: Trypsin is secreted as an inactive zymogen, not in the active form.
B: CCK stimulates enzyme secretion, not bicarbonate.
C: Secretin mainly stimulates bicarbonate secretion, not enzymes.
Compounds containing aspirin are discontinued at least how many weeks before ileostomy surgery?
- A. 1
- B. 2
- C. 3
- D. 4
Correct Answer: B
Rationale: Aspirin and other anticoagulants should be stopped at least two weeks before surgery to minimize bleeding risks.
Which two regions of a tooth contain living cells?
- A. dentin and enamel
- B. anatomical crown and cementum
- C. enamel and cementum
- D. dentin and cementum
Correct Answer: D
Rationale: The correct answer is D. Dentin and cementum are the two regions of a tooth that contain living cells. Dentin is the hard tissue beneath the enamel and cementum that forms the bulk of the tooth structure. It contains living cells called odontoblasts responsible for dentin formation. Cementum is the hard tissue covering the tooth root and is essential for anchoring the tooth in the jawbone. Cementum contains living cells called cementoblasts responsible for cementum formation. Therefore, both dentin and cementum are vital regions of a tooth that house living cells involved in tooth development and maintenance.
A: Dentin and enamel - Enamel is the outermost layer of the tooth and does not contain living cells.
B: Anatomical crown and cementum - Anatomical crown is not a region of the tooth containing living cells.
C: Enamel and cementum - Enamel does not contain living cells, only mineralized structures.
Which of the following is not a part of the digestive system?
- A. Liver
- B. Gallbladder
- C. absorption-neet-mcq/ 8/13 1/17/25, 2:54 PM Digestion and Absorption NEET MCQ 2024
- D. Lungs
Correct Answer: D
Rationale: The correct answer is D: Lungs. The lungs are not a part of the digestive system. The digestive system is responsible for breaking down food into nutrients, absorbing those nutrients, and eliminating waste. The lungs are part of the respiratory system, responsible for gas exchange. Liver (A) and gallbladder (B) are both part of the digestive system, aiding in digestion and nutrient absorption. Absorption (C) is a process within the digestive system, not a separate entity. In summary, the lungs do not play a role in the digestion process, making them the correct answer choice.
A nurse is caring for a client who has peptic ulcer disease. The nurse should monitor the client for which of the following findings as an indication of gastrointestinal perforation?
- A. Hyperactive bowel sounds
- B. Sudden abdominal pain
- C. Increased blood pressure
- D. Bradycardia
Correct Answer: B
Rationale: The correct answer is B: Sudden abdominal pain. Gastrointestinal perforation is a serious complication of peptic ulcer disease. Sudden abdominal pain is a key indicator as perforation can lead to leakage of stomach contents into the abdominal cavity causing severe pain. Hyperactive bowel sounds (A) are more indicative of bowel obstruction. Increased blood pressure (C) can occur due to pain or stress but is not specific to gastrointestinal perforation. Bradycardia (D) is not typically associated with gastrointestinal perforation.