Nokea
Which of the following stimuli activates sensors in the walls of digestive organs?
- A. breakdown products of digestion
- B. distension
- C. pH of chyme
- D. all of the above
Correct Answer: D
Rationale: The correct answer is D, all of the above.
1. Breakdown products of digestion activate chemoreceptors in the digestive organs.
2. Distension triggers stretch receptors in the walls of the organs.
3. pH of chyme stimulates pH receptors.
4. All three stimuli work together to regulate and coordinate digestive processes.
Therefore, D is correct as all options activate sensors in the walls of digestive organs.
Choice A is incorrect because it only refers to chemoreceptors, overlooking the other types of receptors involved.
Choice B is incorrect as it only mentions distension, omitting the roles of chemical stimuli.
Choice C is incorrect as it solely focuses on pH receptors, neglecting the other types of sensors involved in digestion.
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The parietal cells in the gastric glands of the pyloric region produce ______ that bonds with Vitamin ______ to make it more readily absorbed in the ileum.
- A. hydrochloric acid; B12
- B. mucus; D
- C. pepsinogen; D
- D. intrinsic factor; B12
Correct Answer: D
Rationale: The correct answer is D because intrinsic factor is produced by parietal cells in the gastric glands of the pyloric region. Intrinsic factor forms a complex with Vitamin B12, which is essential for its absorption in the ileum. This mechanism is crucial for preventing Vitamin B12 deficiency.
Choice A is incorrect because hydrochloric acid is produced by parietal cells but does not bond with Vitamin B12 for absorption. Choice B is incorrect as mucus is not involved in Vitamin B12 absorption. Choice C is incorrect as pepsinogen is not responsible for facilitating Vitamin B12 absorption.
Which of the following is the transporter for fructose in the small intestine?
- A. SGLT1
- B. SGLT2
- C. GLUT4
- D. GLUT5
Correct Answer: D
Rationale: The correct answer is D: GLUT5. GLUT5 is the specific transporter responsible for transporting fructose across the apical membrane of enterocytes in the small intestine. It is a uniporter that facilitates the movement of fructose down its concentration gradient via facilitated diffusion. SGLT1 (Choice A) and SGLT2 (Choice B) are sodium-glucose transporters involved in the absorption of glucose and galactose, not fructose. GLUT4 (Choice C) is primarily found in muscle and adipose tissue and is responsible for insulin-mediated glucose uptake, not fructose transport in the small intestine.
A 40-year-old severely obese female patient with type 2 diabetes wants to lose weight. After learning about the surgical procedures
- A. she thinks a combination of restrictive and malabsorptive surgery would be best. Which procedure should the nurse teach her about?
- B. Lipectomy
- C. Roux-en-Y gastric bypass
- D. Adjustable gastric banding
Correct Answer: B
Rationale: The correct answer is B: Lipectomy. This procedure involves the removal of excess fat tissue, which can help the patient achieve weight loss. In contrast, options C and D are bariatric surgeries, which are not solely focused on fat removal and may not be suitable for this patient given her age and medical history. Option A, a combination of restrictive and malabsorptive surgery, may pose higher risks for complications in a severely obese patient with diabetes. Lipectomy is a more targeted and less invasive approach to weight loss, making it the most appropriate choice in this scenario.
Which enzyme is responsible for breaking down carbohydrates in the mouth?
- A. Amylase
- B. Protease
- C. Lipase
- D. Pepsin
Correct Answer: A
Rationale: The correct answer is A: Amylase. Amylase is an enzyme that specifically breaks down carbohydrates into sugars in the mouth. It is produced by both salivary glands and pancreas. Protease (B) breaks down proteins, Lipase (C) breaks down fats, and Pepsin (D) breaks down proteins in the stomach. Therefore, A is the correct answer for the enzyme responsible for breaking down carbohydrates in the mouth.
What instruction should be given to a client scheduled for a gallbladder series test?
- A. To remain on a low-residue diet 1 to 2 days before the test
- B. To take a laxative the evening before the test
- C. Not to eat or drink until the test is complete
- D. To take cleansing enemas the morning of the test
Correct Answer: C
Rationale: The correct instruction for a client scheduled for a gallbladder series test is not to eat or drink until the test is complete. This is because the test requires fasting to ensure clear visualization of the gallbladder and surrounding structures. Eating or drinking could interfere with the results by causing gallbladder contraction or obscuring the images.
A) Instructing the client to remain on a low-residue diet is not necessary for this specific test and may not provide the required fasting.
B) Taking a laxative or cleansing enemas is not typically required for a gallbladder series test and can be unnecessary and may even be harmful.