begins carb digestion in the mouth

ATI RN

ATI Nutrition Practice A

1. Begins carb digestion in the mouth:

A. pepsin
B. salivary amylase
C. CCK
D. secretin

Correct answer: B

Rationale: Salivary amylase is the enzyme that begins the digestion of carbohydrates in the mouth by breaking down starches into simpler sugars.

2. Which cells in the islet of the pancreas are responsible for synthesizing insulin?

A. Alpha cells
B. Beta cells
C. Gamma cells
D. Delta cells

Correct answer: B

Rationale: Beta cells in the islets of Langerhans in the pancreas are responsible for the production and secretion of insulin, which is crucial for regulating blood glucose levels. Alpha cells, on the other hand, produce glucagon, a hormone that raises blood glucose levels. Gamma cells and Delta cells do not exist in the islets of Langerhans; therefore, they are incorrect choices.

3. What does a QRS Complex represent in an ECG reading?

A. Atrial depolarization
B. Ventricular repolarization
C. Ventricular depolarization
D. End of ventricular depolarization

Correct answer: C

Rationale: The QRS Complex in an ECG reading represents ventricular depolarization, which is the process of the heart's ventricles preparing to contract by changing the electrical charge in the cell, hence choice 'C' is the correct answer. Choice 'A' is incorrect because atrial depolarization is represented by the P wave in an ECG reading, not the QRS Complex. Choice 'B' is incorrect as ventricular repolarization is depicted by the T wave, not the QRS Complex. Finally, choice 'D' is also incorrect because the QRS Complex is not the end of ventricular depolarization, but the process itself.

4. A nurse is preparing a teaching plan for a client who has neutropenia as a result of radiation therapy for the treatment of lung cancer. Which of the following should the nurse plan to include in the teaching?

A. Bottled water is an appropriate choice to increase fluid intake.
B. The salad bar is a healthy choice when dining out.
C. Soft-boiled eggs are an appropriate source of protein.
D. Eating at a buffet is a good choice to increase caloric intake.

Correct answer: A

Rationale: In neutropenia, which is a low count of neutrophils, the client is at a high risk of infection. It is crucial to emphasize the importance of proper hydration to maintain overall health. Bottled water is a safe choice as it reduces the risk of exposure to contaminants that could further compromise the client's immune system. The other options, like the salad bar, soft-boiled eggs, and eating at a buffet, may not be suitable for a client with neutropenia due to the risk of bacterial contamination or exposure to pathogens that could lead to infections, which should be avoided.

5. Fires are approached using the mnemonic RACE, in which, R stands for:

A. Run
B. Race
C. Rescue
D. Remove

Correct answer: A

Rationale: Patient safety and efficacy of care depend on actions rooted in established nursing protocols that consider both the immediate and long-term needs of the patient.