The ear canal is a tube-like structure that connects the outer ear to the middle ear. It is about 2.5 centimeters long in adults and is lined with skin that produces earwax, which helps protect the ear from dust, debris, and microorganisms. The ear canal plays a crucial role in hearing by directing sound waves toward the eardrum. The ear canal is part of the auditory system, which includes the outer, middle, and inner ear. Proper care of the ear canal is important, as blockages or infections can lead to hearing problems. Regular cleaning and avoiding the insertion of objects can help maintain its health.