In human beings the number of lobes in right and left lungs is

Correct Answer: C

Rationale: The correct answer is C: 3 and 2. The right lung has 3 lobes (upper, middle, lower), while the left lung has 2 lobes (upper and lower). This is due to the presence of the heart on the left side, occupying space that limits the left lung to 2 lobes. Option A is incorrect as the left lung has only 2 lobes. Option B is incorrect as both lungs have different numbers of lobes. Option D is incorrect as the right lung typically has 3 lobes, not 4.

Correct Answer: B

Rationale: The correct answer is B: Take all antibiotics as directed. This is the most important teaching point for a client with a peritonsillar abscess because antibiotics are crucial in treating the infection and preventing complications. Here's the rationale: 1. Antibiotics target the bacteria causing the abscess, helping to clear the infection. 2. Incomplete antibiotic course can lead to antibiotic resistance and recurrence of infection. 3. Not following antibiotic instructions can result in treatment failure and worsening of the abscess. 4. Gargling with warm salt water (choice A) may provide temporary relief but does not address the underlying infection. Liquid medications (choice C) and handwashing (choice D) are important but not as vital as completing the antibiotic course.

Correct Answer: A

Rationale: The correct answer is A. Central chemoreceptors in the medulla are highly sensitive to changes in pH and CO2 levels, influencing respiratory rate and depth. B is incorrect because peripheral chemoreceptors respond mainly to O2 levels. C refers to general respiratory control centers, not specific chemoreceptor function. D is incorrect as the spinal cord lacks central chemoreceptors.

Correct Answer: B

Rationale: The correct answer is B. A respiratory rate of 8 breaths/minute is abnormally low and indicates potential hypoventilation or respiratory depression, which is concerning in a client with chronic emphysema. Fine crackles (A) and barrel chest (D) are common findings but not immediately alarming. Sitting up and leaning forward (C) is a compensatory mechanism for easier breathing.

Correct Answer: C

Rationale: The correct answer is C (Pneumonia). The symptoms described—persistent cough, crackles, rhonchi, and blood-tinged sputum—are indicative of pneumonia. Lung cancer (A) is less likely in a young nonsmoker. The flu (B) typically does not cause blood-tinged sputum. Asthma (D) does not usually present with these specific findings.