Auricle

Definition

The auricle, also known as the pinna, is the external part of the ear that captures sound waves and directs them into the ear canal. It plays a crucial role in localizing sound sources and enhancing auditory perception.

5 Must Know Facts For Your Next Test

1. The auricle is made up of cartilage covered by skin and serves as the visible part of the outer ear.
2. Its shape helps to funnel sound waves into the external auditory canal towards the eardrum.
3. The auricle assists in determining the direction and distance of sounds, contributing to spatial hearing.
4. It contains several anatomical landmarks such as the helix, antihelix, tragus, and lobule.
5. Damage or deformities to the auricle can affect hearing abilities but are generally not life-threatening.

Review Questions

• What are the primary functions of the auricle in hearing?
• Which anatomical features are found on the auricle?
• How does the shape of the auricle contribute to auditory perception?

Related terms

Cochlea: A spiral-shaped organ in the inner ear that converts sound vibrations into neural signals.

Tympanic Membrane: Also known as the eardrum, it vibrates in response to sound waves and transmits these vibrations to ossicles.

Auditory Canal: A tube-like structure that carries sound from the auricle to the tympanic membrane.