AST Surgical Technologist Practice Exam 2026 – Complete All-in-One Guide for Exam Success

Question: 1 / 400

What is the main function of cerumen in the ear?

Protect the tympanic membrane

Cerumen, commonly known as earwax, plays a crucial role in protecting the ear, primarily by safeguarding the tympanic membrane (eardrum). It acts as a natural barrier against foreign particles, dust, and microorganisms, preventing them from entering the ear canal and potentially causing infections or damaging the delicate structures within the ear. Additionally, cerumen has properties that can help lubricate the ear canal, further contributing to its protective function.

While earwax might have some secondary effects that could relate to enhancing hearing or maintaining ear health, its primary and most significant role is focused on protection. It does not directly aid in transmitting sound or assisting with balance, which are functions attributed to other parts of the ear and auditory system. Thus, the main function of cerumen is to ensure the integrity and safety of the tympanic membrane.

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Enhance hearing

Assist balance

Transmit sound

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