What is an instrument used to enlarge a body opening?

A speculum is an instrument used to enlarge a body opening, typically for the purpose of medical examination or treatment. Specula come in various forms and sizes, depending on the intended use. Examples include:

- Vaginal speculum: used in gynecological examinations to visualize the cervix and vagina.

- Otoscope speculum: used in ear examinations to visualize the ear canal and eardrum.

- Nasal speculum: used in nasal examinations to visualize the interior of the nose.

- Rectal speculum: used in rectal examinations to visualize the rectum and anus.

Specula are usually made of metal or plastic and may have adjustable blades or tips to facilitate proper positioning and visualization. They are designed to provide adequate exposure of the desired area while minimizing discomfort to the patient. In some cases, specula may be equipped with a light source to enhance visibility during examinations.