A nurse is explaining the pathophysiology of tuberculosis (TB) to a group of nursing students. Which statement accurately describes the role of granulomas in TB infection?

A) Correct. Sputum samples are often most concentrated with TB bacteria when collected in the morning, as they have had time to accumulate overnight.

B) Incorrect. Rinsing the mouth before collecting sputum may dilute the sample and reduce its accuracy.

C) Incorrect. Deep coughing is encouraged to obtain samples from the lower respiratory tract, where TB bacteria are more likely to be present.

D) Incorrect. Sputum samples should be collected in specific containers designed for this purpose to maintain sample integrity and avoid contamination.

A) Correct. During latent TB infection, TB bacteria are in a dormant state and do not actively replicate or cause symptoms. They can become active and multiply if the immune system weakens.

B) Incorrect. While the immune system can control TB bacteria during latency, it does not immediately eliminate them.

C) Incorrect. Latent TB infection can occur in various parts of the body, not just the lungs, and it typically does not cause symptoms.

D) Incorrect. TB bacteria in latent infection are in a dormant state and do not actively multiply, although they remain viable.