ATI RN
Questions on Respiratory System Questions
Question 1 of 5
The organ of the respiratory system that traps bacteria with a ring of tonsils is the:
Correct Answer: B
Rationale: The correct answer is B: pharynx. The pharynx is the organ that traps bacteria with its tonsils. The tonsils are located in the pharynx and act as the body's first line of defense against pathogens entering the respiratory system. The nose (choice A) is responsible for warming, humidifying, and filtering air, but it does not trap bacteria with tonsils. The larynx (choice C) is involved in sound production and preventing food from entering the airway, not trapping bacteria. The trachea (choice D) is the windpipe that carries air to and from the lungs, but it does not have tonsils to trap bacteria.
Question 2 of 5
A male client comes to the emergency department complaining of sudden onset of diarrhea, anorexia, malaise, cough, headache, and recurrent chills. Based on the client's history and physical findings, the physician suspects Legionnaires' disease. While awaiting diagnostic test results, the client is admitted to the facility and started on antibiotic therapy. What is the drug of choice for treating Legionnaires' disease?
Correct Answer: A
Rationale: The correct answer is A: erythromycin (Erythrocin). Legionnaires' disease is caused by the bacterium Legionella pneumophila, and erythromycin is the drug of choice for treating this infection. Erythromycin is a macrolide antibiotic that effectively targets Legionella bacteria by inhibiting their protein synthesis. It is bacteriostatic at low concentrations and bactericidal at higher concentrations. Rifampin (B) is not the preferred choice for Legionnaires' disease. Amantadine (C) is used for treating influenza A virus, not Legionella bacteria. Amphotericin B (D) is an antifungal agent and is not effective against Legionella pneumophila. Utilizing erythromycin as the treatment of choice ensures successful eradication of the Legionella bacteria and helps the client recover from the infection.
Question 3 of 5
A nurse is working in a walk-in clinic. She has been alerted that there is an outbreak of tuberculosis (TB). Which of the following clients entering the clinic today is most likely to have TB?
Correct Answer: C
Rationale: The correct answer is C, a 43-year-old homeless man with a history of alcoholism. This choice is most likely to have TB because individuals who are homeless and have a history of alcoholism are at higher risk for TB due to weakened immune systems and living conditions. Homelessness and alcoholism increase the likelihood of exposure to TB. Explanation for other choices: A: A 16-year-old female high school student - Less likely to have TB compared to homeless individuals with risk factors. B: A 33-year-old day-care worker - Possible but less likely compared to the homeless man with a history of alcoholism. D: A 54-year-old businessman - Least likely to have TB compared to the homeless individual with risk factors.
Question 4 of 5
The last mammalian structure that air moves through before the alveoli is the
Correct Answer: C
Rationale: The correct answer is C: bronchioles. After air passes through the trachea, it enters the bronchi, which further divide into bronchioles. The bronchioles are the last structures where air passes before reaching the alveoli for gas exchange. The larynx is involved in sound production and the glottis is the opening between the vocal cords in the larynx. While the trachea is the initial passage for air into the respiratory system, the bronchioles are the final branching structures where air reaches the alveoli, making them the correct answer.
Question 5 of 5
Which of the following statements is false?
Correct Answer: D
Rationale: The correct answer is D because carbonic anhydrase catalyzes the conversion of carbon dioxide and water into bicarbonate ions and protons, not the formation of oxyhemoglobin. Step-by-step rationale: 1. Hemoglobin functions as a buffer by binding to hydrogen ions to help regulate pH levels in the blood. 2. Bicarbonate ions do tend to diffuse out of red blood cells into the plasma to maintain the balance of CO2 and pH. 3. The movement of molecules is indeed different in metabolically active tissues (where oxygen is released and CO2 is taken up) compared to the alveoli (where the opposite occurs). Therefore, choices A, B, and C are all correct statements, making D the false statement.