Which instrument is used to examine the ear and eardrum?

The otoscope is a specialized instrument designed specifically for examining the ear and eardrum. It features a funnel-shaped speculum that can be inserted into the ear canal, allowing healthcare providers to visualize the outer ear and the tympanic membrane (eardrum) clearly. This examination is crucial for diagnosing various conditions related to the ear, such as infections, blockages, or damage to the eardrum.

In contrast, other instruments listed serve different purposes. A stethoscope is primarily used to listen to internal sounds within the body, such as heartbeats and breath sounds, but it does not facilitate direct visualization of the ear. An endoscope is used for examining the interior of hollow organs and cavities within the body, such as the gastrointestinal tract, rather than the ear. A rhinoscope, on the other hand, is used specifically for examining the nasal passages. Therefore, in the context of examining the ear and eardrum, the otoscope is the correct choice.