Journey of Sound: From Air to Brain
Journey of Sound: From Air to Brain
Learning objective
Lesson duration is: 50 minItems in this lesson
Journey of Sound: From Air to Brain
Learning objective
Learning Objective
At the end of the lesson, you will be able to describe the pathway sound waves take from the air to the brain.
What do you already know about how we hear sounds?
The Outer Ear
The outer ear consists of the pinna and the ear canal. It captures sound waves and funnels them into the ear.
Enter your question here
Answer A
Answer B
Answer C
Answer D
The Eardrum
Sound waves hit the eardrum, causing it to vibrate. This marks the start of the sound journey through the middle ear.
The Middle Ear
The middle ear contains three tiny bones: malleus, incus, and stapes. These bones amplify vibrations from the eardrum.
The Cochlea
The cochlea is a spiral-shaped organ filled with fluid. Vibrations from the stapes create waves in this fluid.
Hair Cells
Tiny hair cells in the cochlea move with the fluid waves. This movement creates electrical signals.
The Auditory Nerve
Electrical signals travel along the auditory nerve to the brain, where they are interpreted as sound.
Sound Pathway Summary
Sound travels from the outer ear, through the middle ear, into the cochlea, and finally to the brain.
Interactive Quiz
Let's test your knowledge: What role does the eardrum play? How does the cochlea process sound?
Review and Questions
Review key points: outer ear, eardrum, middle ear, cochlea, hair cells, auditory nerve. Any questions?
Write down 3 things you learned in this lesson.
Write down 2 things you want to know more about.
Ask 1 question about something you haven't quite understood yet.
