Why+do+you+get+dizzy+when+you+spin+around?


 * __WHY DO YOU GET DIZZY WHEN YOU SPIN AROUND?__**

Answer the question below, append new answers to the top of this page. _ __Response 1:__ We get dizzy when we spin because the ears are sending the wrong messages to the brain. In the upper part of the ear there is a system called the vestibular system. this system detects our motions, so if we get up fast we get a "head rush" or in other words lightheaded. this is because the ears are detecting unusual motions. The vestibular system senses motion through three semicircular canals. Not only do these canals have hair-like sensory nerve cells, but they also contain a fluid called endolymph. The fluid resists changes in motion. Endolymph goes behind the hair and sends signals to the brain which lets it know which way the head moved. When we spin, our brain receives mixed messages. The endolymph slowly begins to move in the same direction we are spinning. As time goes by, the endolymph catches up to the rate of speed we are spinning and no longer stimulates the nerve cells. This causes our brain to quickly adapt to the nerve signals. However, when we stop spinning, the endolymph continues to move and stimulates hair cells in the opposite direction.
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http://www.coolquiz.com/trivia/explain/docs/dizzy.asp

Dil B. 8.3

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