Question

Explain the process of sound transmission in humans.

Answer 1

Sound transmission refers to how sound waves are collected from the environment, amplified, and carried deep into the inner ear.

1. Collection of Sound: The external ear flap, called the pinna, collects sound waves from the surroundings and channels them into the auditory canal.
2. Vibrating the Eardrum: The sound waves travel down the canal and strike the tympanic membrane (eardrum), causing it to vibrate.
3. Amplification by Ear Ossicles: These vibrations are passed to the middle ear cavity, which contains three tiny bones: the malleus (hammer), incus (anvil), and stapes (stirrup). These bones vibrate in sequence, mechanically amplifying the strength of the sound vibrations.
4. Entering the Inner Ear: The vibrating stapes pushes against a membrane called the oval window, which successfully transfers the amplified pressure waves into the fluid inside the inner ear.