What type of device is a manometer?

• A. A device for measuring lung volume
• B. A device for measuring air pressures
• C. A device for monitoring oxygen levels
• D. A device for recording speech patterns

Answer: (B)

A manometer is designed specifically to measure air pressure. This device is essential in various applications, including respiratory physiology, where it helps assess the pressure changes in the respiratory system during inhalation and exhalation. By providing a quantitative measure of pressure, a manometer can help evaluate lung function and the effects of different breathing patterns.

While other devices may monitor lung volume, oxygen levels, or record speech patterns, they serve different functions and utilize different technologies than those employed by a manometer in measuring pressure. Thus, identifying a manometer as a tool for measuring air pressures accurately reflects its primary purpose in speech science and related fields.