The fluid-filled cochlea contains thousands of hair-like nerve endings called cilia. When the stirrup causes the fluid in the cochlea to vibrate, the cilia move. The cilia change the vibrations into messages that are sent to the brain via the auditory nerve. The auditory nerve carries messages from 25,000 receptors in your ear to your brain. Your brain then makes sense of the messages and tells you what sounds you are hearing.
How You Keep Your Balance
Near the top of the cochlea are three loops called the semi-circular canals. The canals are full of liquid also. When you move your head, the liquid moves. It pushes against hairlike nerve endings, which send messages to your brain. From these messages, your brain can tell whether or how your body is moving.
If you have ever felt dizzy after having spun around on a carnival ride, it was probably because the liquid inside the semicircular canals swirled around inside your ears. This makes the hairs of the sensory cells bend in all different directions, so the cells' signals confuse your brain.
What Did You Say?
Did you know that some people have trouble hearing and others cannot hear at all? Well it's true. When a person can't hear well, a hearing aide can sometimes help them hear better. However, people who are entirely deaf have to rely on all their other senses to help process all of the information from the world around them. They are deaf because of an illness or they were born that way. You can also lose your ability to hear at an early age by listening to things that are very loud. Scientists measure loudness in decibels. Below is a table of various noises and their decibel level.
The fluid-filled cochlea contains thousands of hair-like nerve endings called cilia. When the stirrup causes the fluid in the cochlea to vibrate, the cilia move. The cilia change the vibrations into messages that are sent to the brain via the auditory nerve. The auditory nerve carries messages from 25,000 receptors in your ear to your brain. Your brain then makes sense of the messages and tells you what sounds you are hearing.
How You Keep Your Balance
Near the top of the cochlea are three loops called the semi-circular canals. The canals are full of liquid also. When you move your head, the liquid moves. It pushes against hairlike nerve endings, which send messages to your brain. From these messages, your brain can tell whether or how your body is moving.
If you have ever felt dizzy after having spun around on a carnival ride, it was probably because the liquid inside the semicircular canals swirled around inside your ears. This makes the hairs of the sensory cells bend in all different directions, so the cells' signals confuse your brain.
What Did You Say?
Did you know that some people have trouble hearing and others cannot hear at all? Well it's true. When a person can't hear well, a hearing aide can sometimes help them hear better. However, people who are entirely deaf have to rely on all their other senses to help process all of the information from the world around them. They are deaf because of an illness or they were born that way. You can also lose your ability to hear at an early age by listening to things that are very loud. Scientists measure loudness in decibels. Below is a table of various noises and their decibel level.
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