korvakäytäviä

Korvakäytäviä refers to the passages within the external ear that lead from the auricle (outer ear) to the tympanic membrane (eardrum). In humans, this anatomical structure is known as the external auditory canal or external acoustic meatus. It plays a crucial role in hearing by channeling sound waves towards the eardrum.

The korvakäytäviä is typically about 2.5 centimeters long in adults and has a slightly irregular shape. It is lined with skin that contains glands producing cerumen, commonly known as earwax. Earwax serves to protect the ear canal by trapping dust, debris, and foreign particles, and also possesses antibacterial properties. The outer third of the korvakäytäviä is cartilaginous, while the inner two-thirds are bony.

The shape and structure of the korvakäytäviä can vary between individuals and species. In some animals, the length and curvature of these passages are adapted for specific auditory needs, such as better sound localization or protection from environmental elements. Issues related to the korvakäytäviä can include blockages from earwax, infections (otitis externa), or the presence of foreign objects, all of which can impair hearing and cause discomfort. Medical professionals use specialized instruments to examine and treat conditions affecting this part of the ear.