Nursing Elites

1. _____ neutralizes stomach acid in the small intestine:

• A. saliva
• B. gastric mucus
• C. bicarbonate ions
• D. enzymes

Correct answer: C

Rationale: The correct answer is C: bicarbonate ions. Bicarbonate ions, secreted by the pancreas, neutralize the acidic chyme entering the small intestine from the stomach, creating a more suitable environment for digestive enzymes. Saliva (choice A) helps in the initial breakdown of food in the mouth, not in neutralizing stomach acid. Gastric mucus (choice B) protects the stomach lining from the acidic environment but does not neutralize the acid in the small intestine. Enzymes (choice D) facilitate chemical reactions in digestion but do not neutralize stomach acid.

2. How much extra protein (above RDA) is safe to consume?

• A. 2x your RDA
• B. any amount
• C. 3x your RDA
• D. 20 grams

Correct answer: A

Rationale: Consuming up to twice the Recommended Dietary Allowance (RDA) of protein is generally considered safe for most people, although it may vary depending on individual health conditions.

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. Which breakfast item should be recommended for a vegan adolescent to combine protein?

• A. Bagel with cream cheese
• B. Wheat toast with jelly
• C. Oatmeal pancakes with peanut butter
• D. Eggs with tofu bacon

Correct answer: C

Rationale: Oatmeal pancakes with peanut butter provide a protein combination suitable for a vegan diet.

5. Dina, 17 years old, asks you how a tubal ligation prevents pregnancy. Which would be the best answer?

• A. Prostaglandins released from the cut fallopian tubes can kill sperm
• B. Sperm cannot enter the uterus because the cervical entrance is blocked
• C. Sperm can no longer reach the ova, because the fallopian tubes are blocked
• D. The ovary no longer releases ova as there is nowhere for them to go

Correct answer: C

Rationale: The correct answer is C: 'Sperm can no longer reach the ova because the fallopian tubes are blocked.' Tubal ligation works by blocking the fallopian tubes, preventing sperm from reaching the egg for fertilization. Choice A is incorrect because prostaglandins are not released from the cut fallopian tubes to kill sperm. Choice B is incorrect as the cervical entrance being blocked does not relate to tubal ligation. Choice D is incorrect because tubal ligation does not affect the release of ova from the ovary.

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