Question

Answer the following questions and give the rationale for your answer.

21. Ventilation, perfusion, and exchange of gases are the major purposes for

A. Respiration

B. Circulation

C. Aerobic metabolism

D. Anaerobic metabolism

ANSWER AND RATIONALE

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22. Afterload refers to:

A. The resistance to left ventricular ejection.

B. The amount of blood in the left ventricle at the end of diastole.

C. The amount of blood ejected from the left ventricle each minute.

D. The amount of blood ejected from the left ventricle with each contraction.

ANSWER AND RATIONALE

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23. The movement of gases in and out of the lungs depends on:

A. 50% oxygen content in the atmospheric air.

B. The pressure gradient between the atmosphere and the alveoli.

C. The use of accessory muscles of respiration during expiration.

D. The amount of carbon dioxide dissolved in the fluid of the alveoli.

ANSWER AND RATIONALE

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24. Mr. Isaac comes to the emergency room complaining of difficulty in breathing. An objective finding associated with his dyspnea might include:

A. Feelings of heaviness in his chest.

B. Complaints of shortness of breath.

C. Use of accessory muscles of respiration.

D. Statements about a sense of impending doom.

ANSWER AND RATIONALE

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25. The use of chest physiotherapy to mobilize pulmonary secretions involves the use of

A. Hydration

B. Percussion

C. Nebulization

D. Humidification

ANSWER AND RATIONALE

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Answer 1

21. Answer ; A) Respiration

Rationale ; The process that are mentioned in the given statement such as ventilation, perfusion and the exchange of gases are for the major purspose of above mentioned process. This process will leads to the other process mentioned in the option, such as circulation and metabolism. Hence the key process mentioned in the statement is for the purpose of respiration.

22. Answer ; A) The rsistance of the left ventricular contraction.

Rationale ; The term mentioned in the question refers to the the pressure wich is present in the chamber of the heart the resisi the outflow of blood and control the pumping out of large amount of blood during the contraction of heart, especially on the ventricular chamber. The options explains the term End diastolic volume and stroke volume in the heart.

23. Answer ; B) The presurre gradient between the atmosphere and the alveoli.

Rationale ; Thispart of the long function depends on the above mentioned factor. if there a changes in these factor whether it is increase or decrease it will affect process and function of this organ. Other factor mentioned in the option are not relavent to the actual functions of the lungs.

24. Answer ; C) use of accessory muscles for respiration.

Rationale ; Among the given sign and symptoms the above mentioned statement is the only outward sign that a nurse can find out just by identifying and observing the client. Other options are only recognized by the client personally.

25. Answer ; B) percussion