Eustachian tube

Definition

The Eustachian tube is a narrow canal that connects the middle ear to the nasopharynx, which is the upper throat and back of the nasal cavity. It helps equalize pressure on both sides of the eardrum and drains mucus from the middle ear.

5 Must Know Facts For Your Next Test

1. The Eustachian tube is essential for maintaining middle ear pressure equilibrium.
2. It opens during activities like swallowing or yawning to allow air to flow into the middle ear.
3. Eustachian tube dysfunction can lead to conditions such as otitis media (middle ear infection).
4. Blockage of the Eustachian tube can cause symptoms like hearing loss, ear pain, and a sense of fullness in the ear.
5. Medications such as decongestants and antihistamines are sometimes used to treat Eustachian tube dysfunction.

Review Questions

• What role does the Eustachian tube play in maintaining ear health?
• How does Eustachian tube dysfunction affect hearing?
• Which types of medications are commonly used to treat Eustachian tube dysfunction?

Related terms

Otitis Media: An infection or inflammation of the middle ear often caused by bacteria or viruses.

Decongestants: Medications that reduce nasal congestion by narrowing blood vessels in the nasal passages.

Antihistamines: Drugs that counteract histamine production and help reduce allergy symptoms.