Understanding How We Hear

The video explains how we hear sounds. Sound waves travel through the outer ear canal, causing the eardrum to move. This movement vibrates the three middle ear bones, which then create fluid movement in the cochlea of the inner ear. Sensory receptors in the cochlea send signals along the auditory nerve to the brain, allowing us to interpret sounds.

What is the initial step in the process of hearing?

• The cochlea sends signals

• Sound travels through the inner ear

• Sound travels through the outer ear canal

• The brain interprets the sound

What happens when the eardrum moves?

• The brain interprets the sound

• The cochlea sends signals

• The outer ear canal vibrates

• The three middle ear bones vibrate

What is the role of the cochlea in hearing?

• It blocks unwanted noise

• It vibrates the eardrum

• It sends signals to the brain

• It amplifies sound

How does the fluid in the cochlea contribute to hearing?

• It blocks external noise

• It causes the eardrum to vibrate

• It amplifies sound waves

• It moves sensory receptors to send signals

What is the final step in the hearing process?

• Sound travels through the outer ear

• The eardrum vibrates

• The brain interprets the signals

• The cochlea vibrates