Outer ear

Definition

The outer ear consists of the pinna (or auricle) and the external auditory canal. It functions to collect sound waves and funnel them towards the eardrum.

5 Must Know Facts For Your Next Test

1. The pinna helps in directing sound waves into the ear canal.
2. The ear canal amplifies sounds in the frequency range of human speech.
3. Cerumen (earwax) is produced in the outer ear to protect against dust and microorganisms.
4. The outer ear plays a crucial role in localizing sound sources.
5. Damage to the outer ear can result in conductive hearing loss.

Review Questions

• What are the main components of the outer ear?
• How does the outer ear contribute to hearing?
• What is the role of cerumen in the outer ear?

Related terms

Pinna: The visible part of the outer ear that collects sound waves.

Eardrum: A thin membrane that separates the external ear from the middle ear, vibrating in response to sound waves.

Conductive Hearing Loss: Hearing loss caused by problems with conducting sound through the outer or middle ear.