We decided to learn about balance. Mr. Kintobotnik flies the SCAS up to Jessie's eardrum and moves past it. He pilots it up to a tube-like thingy in her ear.
"If we're going to learn about balance,” he said to us, “we have to learn about the inner ear, where balance is at work."
He shrinks the SCAS some more, flies towards the inner ear, and moves past the cells that build up the side we're entering. Eventually, we make it in the inner ear, and it's filled with some kind of liquid. Mr. Kintobotnik resizes the SCAS back to the size of a flu virus.
"This is the inside of the inner ear, class!” he continued. “This is where balance happens!"
He flies the SCAS towards what look like organs in the inner ear. Right in front of them are some nerves.
“These organs are the otolith organs,” he taught. 'Their job is to know the head's relation with gravity, like when you lie down, lean, or tilt. In front of them are the vestibular nerves. Messages from the otolith organs go to the vestibular nerves, and they send those messages to the cerebellum.”
The vestibular nerves go off and react like crazy. Since Jessie is resting her head on her arms with her head tilted to her right, I'm guessing her otolith organs are reacting to her head tilting to the right.
The class becomes intrigued in the way Jessie's inner ear worked. Half of them wanted to go in a vestibular nerve while the other half wanted to go in an otolith organ. In the end...
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