Multiple Choice Questions for Respiratory System

Multiple Choice Questions for Respiratory System Related

Review Multiple Choice Questions for Respiratory System related questions and content

Of the four parts of respiration the part when oxygen and carbon dioxide are exchanged in the capillaries lining the alveoli in the lungs is:

  • A. pulmonary ventilation
  • B. external respiration
  • C. transport of respiratory gases
  • D. internal respiration
Correct Answer: B

Rationale: The correct answer is B: external respiration. This is the part of respiration where oxygen and carbon dioxide are exchanged in the capillaries lining the alveoli in the lungs. During external respiration, oxygen from the alveoli diffuses into the bloodstream while carbon dioxide from the bloodstream diffuses into the alveoli to be exhaled.

A: Pulmonary ventilation refers to the process of breathing, specifically the movement of air in and out of the lungs. This does not involve the actual exchange of gases in the alveoli.

C: Transport of respiratory gases involves the movement of oxygen and carbon dioxide through the bloodstream to and from the tissues. This is not specifically related to the exchange of gases in the alveoli.

D: Internal respiration refers to the exchange of gases between the bloodstream and the tissues at the cellular level. This does not specifically occur in the alveoli of the lungs.

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Which dietary modification helps to meet the nutritional needs of patients with COPD?

  • A. Eating a high-carbohydrate, low-fat diet
  • B. Avoiding foods that require a lot of chewing
  • C. Preparing most foods of the diet to be eaten hot
  • D. Drinking fluids with meals to promote digestion
Correct Answer: B

Rationale: Patients with COPD may have difficulty chewing due to dyspnea, so avoiding foods that require a lot of chewing helps in meeting their nutritional needs. Choosing foods that are easier to eat can prevent fatigue during meals and ensure adequate nutrition intake.

2,3 DPG (Diphospho glycerate) is an important molecule that competes for Oxygen binding sites of Hemoglobin. It is present in

  • A. Blood Plasma
  • B. Erythrocytes
  • C. Leucocytes
  • D. Blood of lungs
Correct Answer: B

Rationale: The correct answer is B: Erythrocytes. 2,3 DPG is a molecule found inside red blood cells (erythrocytes) that helps in regulating the oxygen binding capacity of hemoglobin. It competes for oxygen binding sites and helps in the release of oxygen to tissues. Choice A (Blood Plasma) is incorrect because 2,3 DPG is not found freely circulating in the blood plasma. Choice C (Leucocytes) is incorrect as 2,3 DPG is not primarily found in white blood cells. Choice D (Blood of lungs) is incorrect as 2,3 DPG is mainly located within red blood cells and not in the blood present in the lungs.

A nurse plans care for a client who is experiencing dyspnea and must stop multiple times when climbing a flight of stairs. Which intervention would the nurse include in this client's plan of care?

  • A. Assistance with activities of daily living
  • B. Physical therapy activities every day
  • C. Oxygen therapy at 2 L per nasal cannula
  • D. Complete bedrest with frequent repositioning
Correct Answer: A

Rationale: The correct answer is A: Assistance with activities of daily living. This intervention helps conserve the client's energy by reducing the physical exertion required for activities like climbing stairs. It promotes independence while ensuring safety and preventing further exacerbation of dyspnea. Physical therapy activities every day (B) may be too strenuous for a client experiencing dyspnea. Oxygen therapy at 2 L per nasal cannula (C) may be necessary for severe cases but does not address the client's functional limitations. Complete bedrest with frequent repositioning (D) may lead to deconditioning and worsen the client's dyspnea.

After using a nasal cannula delivery system at 3 L/min, a patient with chronic airflow
limitation (CAL) changes to a simple face mask. The nasal equipment oxygen was set at 3
L/min. How should the nurse adjust the oxygen flow for the new delivery system?

  • A. Decrease it to 2 L.
  • B. Keep it the same.
  • C. Increase it to 4 L.
  • D. Increase it to 6 L.
Correct Answer: D

Rationale: To determine the correct oxygen flow for a simple face mask, you should increase it from the previous nasal cannula rate. As simple face masks deliver oxygen less efficiently, a higher flow rate is needed to maintain the same oxygen concentration. Moving from 3 L/min nasal cannula to a simple face mask, you should increase the flow to 6 L/min to ensure adequate oxygen delivery to the patient with chronic airflow limitation. Choices A and B are incorrect as decreasing or keeping the flow the same would not provide sufficient oxygen. Choice C is also incorrect as increasing it to 4 L/min may not be enough to compensate for the decreased efficiency of the simple face mask.

If the thoracic wall but not lungs is punctured

  • A. The lungs get inflated
  • B. The man dies as lungs get collapsed
  • C. The breathing rate decrease
  • D. The breathing rate increase
Correct Answer: B

Rationale: The correct answer is B because if the thoracic wall is punctured but not the lungs, air will enter the pleural cavity causing a pneumothorax. This leads to lung collapse and can result in death due to impaired gas exchange. Choices A and C are incorrect as the lungs do not get inflated and breathing rate does not decrease. Choice D is incorrect as the breathing rate actually increases in response to the decreased lung function.

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