Lungs

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Why are Human Voices Different?

Why are Human Voices Different?

Imagine a scenario. A criminal is being tried in court. He denies saying something. The prosecution brings a recording, saying they have his confession on tape. As the accused vigorously denies the voice being his, an expert shows just why the voice could be no one else’s. A fictional scene? Perhaps, but it is a reality that no two persons in the world have exactly the same voices. Do you know why this is so?...

Why do we Get Hiccups?

Hic! You’ve just hiccuped for what seems like the tenth time since you finished your big dinner. Wonder where these funny noises are coming from? The part to blame is your diaphragm, a dome-shaped muscle at the bottom of your chest, and all hiccups start here. The diaphragm almost always works perfectly. It pulls down when you inhale to help pull air into the lungs, and it pushes up when you exhale to help push air out of the lungs....

Medical Research : Location, Mt. Everest

Where: London, United Kingdom January 10, 2009 : An interesting story by BBC News tells how a team of London doctors, including five anesthetists, two general practitioners and a vascular surgeon climbed Mt. Everest. They then treated themselves as guinea pigs to measure oxygen levels present in their blood at the summit. The readings confirmed that high-altitude climbers have extremely low levels of oxygen in their blood. At sea-level these would only be seen in patients who were close to death....

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