Which of the following is NOT a use of the diaphragm of the stethoscope?

The diaphragm of a stethoscope is designed to pick up high-frequency sounds, making it well-suited for certain applications in clinical practice. Among the options, it is particularly effective for listening to normal heart sounds, breath sounds, and even certain bowel sounds.

Low-pitched sounds, on the other hand, are better detected using the bell of the stethoscope, which is designed to capture these types of sounds due to its smaller surface area and lower sensitivity to high-frequency noises. Therefore, the assertion that the diaphragm is used for the detection of low-pitched sounds is incorrect, as this function relies on the bell instead.

In summary, the diaphragm is primarily used for high-frequency sounds, while low-pitched sounds require the use of the bell, making the identification of its role in listening to low-pitched sounds the correct answer to the question posed.