Science Focus
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The human voice box is a strange and amazing thing. In this video of a quartet singing, you can see the voice box in action via laryngoscope — a tiny camera on a flexible tube inserted through the nose and down the throat.
First, you see the camera enter the nostril and continue over the back of the tongue until you see the larynx. The opening in the center is the entrance to the airway. The whitish bands on either side of the opening are the vocal cords. When they are open, that means the singer is taking a breath. When they are closed, the air is being pushed through them, making them...
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