BETA
Chapter 1
The outer and middle ear
Chapter 2
The inner ear and the brain
Chapter 3
The balance system
Chapter 4
Hearing health and sound limits
YOUR GOAL
Master of The human ear
Ch 2 · The inner ear and the brain
artiteacher Guide sound waves and inner ear fluid to master how you hear and stay balanced.
artiteacher Inner Ear and Balance
Those tiny crystals sliding in your ear tell your brain exactly where is up!
artiteacher The vestibulocochlear nerve carries electrical sound signals from the cochlea directly to the brain.
artiteacher Specialized hair cells convert physical fluid movement into electrical impulses for the brain.
Fun Fact
Hair cell count: Unlike sharks, which can regrow damaged ear hair cells, humans are born with a lifetime supply of only 15,000.
Glossary
cochlea (noun)
The spiral cavity of the inner ear containing the organ of Corti, which produces nerve impulses in response to sound vibrations. In 1961, Georg von Békésy won a Nobel Prize for explaining how sound vibrates this spiral organ.
The spiral cavity of the inner ear containing the organ of Corti, which produces nerve impulses in response to sound vibrations. In 1961, Georg von Békésy won a Nobel Prize for explaining how sound vibrates this spiral organ.
Quiz
What fluid-filled organ of the inner ear contains the hair cells responsible for hearing?
Quiz
Which spiral-shaped, fluid-filled organ in the inner ear is responsible for hearing?
Quiz
Which cranial nerve transmits auditory information from the inner ear to the brain?