Nokea
The hormone which causes the pancreas to secrete an enzyme-rich fluid is _____.
- A. cholecystokinin
- B. secretin
- C. enterogastrone
- D. enterocrinin
Correct Answer: A
Rationale: The correct answer is A: cholecystokinin. Cholecystokinin stimulates the pancreas to secrete an enzyme-rich fluid to aid in digestion in response to the presence of fats and proteins in the small intestine. Secretin mainly stimulates bicarbonate secretion from the pancreas. Enterogastrone inhibits gastric emptying. Enterocrinin stimulates the secretion of digestive enzymes from the pancreas and also helps regulate the movements of the intestine.
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Which type of cells produce insulin in the pancreas?
- A. acinar cells
- B. duct cells
- C. alpha cells
- D. beta cells
Correct Answer: D
Rationale: The correct answer is D: beta cells. Beta cells are the specific type of cells in the pancreas responsible for producing insulin. They are located in the islets of Langerhans and play a crucial role in regulating blood sugar levels. Acinar cells (A) are responsible for producing digestive enzymes, duct cells (B) are involved in transporting pancreatic enzymes, and alpha cells (C) produce glucagon, which has the opposite effect of insulin in regulating blood sugar. Therefore, the correct choice is beta cells as they are the primary insulin-producing cells in the pancreas.
A nurse is teaching a client how to do fecal occult blood testing. Which of the following statements by the client indicates a need for further teaching?
- A. I will continue my low-dose aspirin therapy regimen.'
- B. I will refrain from eating raw fruits and vegetables.'
- C. I will avoid steak and other red meats.'
- D. I will continue taking my Coumadin as prescribed.'
Correct Answer: A
Rationale: Rationale:
A: Low-dose aspirin can cause false positive results in fecal occult blood testing due to its effect on gastrointestinal bleeding. Therefore, the client should inform the healthcare provider and consider stopping or adjusting the aspirin therapy during the testing period.
B: Refraining from raw fruits and vegetables is correct as they can interfere with the test results.
C: Avoiding red meats is correct as they can also affect the test results.
D: Continuing Coumadin as prescribed is correct as it does not interfere with fecal occult blood testing.
In the tunica mucosa and submucosa of the small intestine, a series of folds called the ______ functions to ______.
- A. plicae circulares; increase surface area
- B. villi; increase surface area
- C. microvilli; allow the small intestine to expand
- D. rugae; allow the small intestine to expand
Correct Answer: A
Rationale: The correct answer is A: plicae circulares; increase surface area. Plicae circulares are circular folds in the small intestine that increase surface area for nutrient absorption. They help in maximizing contact with digested food. Villi and microvilli are structures on the surface of the small intestine that further increase surface area for absorption but are not the folds themselves. Rugae are folds found in the stomach, not the small intestine.
The outer layer of the GI tract is composed of connective tissue and a simple squamous epithelium. This tunic is called the tunica ______ and the simple squamous epithelium is called the ______.
- A. adventitia, visceral peritoneum
- B. serosa, visceral peritoneum
- C. serosa, parietal peritoneum
- D. adventitia, parietal peritoneum
Correct Answer: B
Rationale: The correct answer is B: serosa, visceral peritoneum. The outer layer of the GI tract is called the serosa, which is composed of connective tissue and a simple squamous epithelium known as the visceral peritoneum. The serosa helps to protect and support the GI tract.
A: adventitia, visceral peritoneum - Adventitia is a dense connective tissue layer found in structures that are not intraperitoneal, whereas the visceral peritoneum is specific to the peritoneal cavity.
C: serosa, parietal peritoneum - The parietal peritoneum is the outer layer of the peritoneum lining the abdominal cavity, not the outer layer of the GI tract.
D: adventitia, parietal peritoneum - Similar to choice A, the parietal peritoneum is not part of the outer layer of the GI tract.
The nurse is talking with a patient who has been experiencing nausea and vomiting. The patient indicates an interest in using alternative therapies for the condition. Which product may aid in nausea management?
- A. Ginger
- B. Ginseng
- C. Chamomile
- D. Soy
Correct Answer: A
Rationale: Step-by-step rationale:
1. Ginger has been shown to help alleviate nausea and vomiting due to its anti-inflammatory properties.
2. Ginger can help relax the stomach muscles and aid in digestion, reducing symptoms of nausea.
3. Studies have supported the use of ginger for managing nausea in various conditions.
4. Overall, ginger is a safe and effective option for nausea management.
Summary of incorrect choices:
- Ginseng: Ginseng is not commonly used for nausea relief and lacks sufficient evidence to support its effectiveness.
- Chamomile: While chamomile is known for its calming effects, it is not specifically indicated for nausea management.
- Soy: Soy is not typically used to alleviate nausea and vomiting symptoms.