Vocal cords or vocal folds are structures in the larynx which are designed to vibrate when air passes by, producing sound. These structures allow people to speak, and they also help to protect the lungs from accidental inhalation of food, saliva, and mucus.
The best way for any person to express his thoughts is to speak. We can make many different sounds by forcing air out of our vocal cords.
Vocal cords lie in our throat. When we speak we push air out of our vocal cords causing them to vibrate. The mouth and lips automatically come in sync with them to change sound into words.
Most of the time the vocal cords are open (relaxed), letting air to pass through as you breathe. These cords become tight and stiff when we are ready to speak. The gap between the cords decides one pitch of the sound to be high or low.
A low pitch sound is created when the vocal cords are open wide out and vibrate slowly.
A high pitch sound is created when the vocal cords are close together and vibrate.
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