Which part of the ear conducts sound waves to the inner structures?

The external ear encompasses structures that play a crucial role in the process of sound conduction. It includes the pinna (or auricle) and the auditory canal. The primary function of the external ear is to collect sound waves from the environment and direct them toward the inner parts of the ear.

Specifically, the auditory canal channels the sound waves toward the eardrum, while the pinna helps in localizing sounds. After the sound waves reach the eardrum, they transfer their vibrations to the middle ear structures, which further conveys them to the inner ear for auditory processing. Thus, the external ear is instrumental in effectively transmitting sound waves to the inner structures, making it the correct answer in this context.

While the other choices mention specific parts of the ear, they do not encompass the entire function of sound wave conduction as depicted in the answer regarding the overall role of the external ear.