Journey of Sound to the Brain

What catches sound waves initially?

• The eardrum

• The cochlea

• The outer ear

• The auditory nerve

What are the three tiny bones in the ear called?

• Cilia, Dendrites, and Axons

• Cochlea, Vestibule, and Canal

• Eustachian tube, Oval window, and Round window

• Malleus, Incus, and Stapes

What part of the ear amplifies sound vibrations?

• The ear canal

• The eardrum

• The cochlea

• The tiny bones

What shape is the cochlea compared to?

• A spiral staircase

• A bean

• A snail

• A pea

Which part of the ear is filled with fluid?

• The eardrum

• The ear canal

• The cochlea

• The auditory nerve

How do hair cells in the cochlea convert sound vibrations?

• By moving fluid in the cochlea

• By vibrating the eardrum

• By generating electrical signals

• By amplifying sound waves

What does the auditory nerve do with the electrical signals?

• Stores them for later use

• Amplifies them further

• Sends them to the brain

• Converts them back into sound waves

Which hair cells detect the highest pitched sounds?

• Outside the cochlea

• At the apex of the cochlea

• At the base of the cochlea

• In the middle of the cochlea

What detects lower pitched sounds in the cochlea?

• The eardrum

• Hair cells toward the top of the spiral

• Hair cells at the base

• Hair cells in the middle

How does the brain interpret the electrical signals?

• As sounds

• As smells

• As tactile sensations

• As visual images