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You are watching: Which structure prevents food or water from entering the trachea?

InformedHealth.org . Cologne, Germany: Institute because that Quality and also Efficiency in Health treatment (IQWiG); 2006-.


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The larynx (voice box) is the area the connects the neck to the windpipe (trachea). There is no it, we would hardly be able to sing or speak. It likewise keeps food and also drink the end of the windpipe.


The structure of the larynx

The larynx is situated about half way under our neck. It have the right to be believed of as a brief tube. In ~ the peak it is linked to the throat, and at the bottom that is attached to the windpipe, for this reason it’s a component of our respiratory tract system.

The within of the larynx is lined through mucous membrane tissue. Its walls room made of connective tissue, muscles and also cartilage. The cartilage offers support and additionally keeps the larynx elastic. In men, it is plainly visible from outside the body and also known as the “Adam’s apple.”


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How does the larynx avoid food indigenous “going down the not correct way”?

The larynx has actually a type of lid to protect against food from entering the windpipe and lower airways: This lid is referred to as the epiglottis. That is attached come the top part of the larynx, whereby it deserve to close the enntrance gate to the larynx. Once we swallow, it moves down to keep any food or liquids out of the windpipe.


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How walk the larynx produce your voice?

The lining that the larynx has actually folds across it around halfway down. This are recognized as the ventricular folds. Looking into the larynx indigenous above, castle look a tiny like curtains that have actually been attracted open slightly. The vocal cords run along your edges. The gap between the 2 vocal cords is dubbed the glottis.

By using ligaments and also muscles, the vocal cords have the right to be opened and also closed, tensed and held together closely – i m sorry looks like the curtains being closed. As soon as we breathe out, wait flows with the gap in between the vocal cords. Depending on their precise position, this reasons them come vibrate in different ways, resulting in different tones. Along with the movements of the tongue and mouth, really different sounds can be developed at different volumes, allowing us to speak and also sing.

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In childhood, the vocal cords of boys and also girls room equally long. The larynx grows throughout puberty. This makes the vocal cords longer, lowering the voice – over there is a noticeable “breaking” that the voice, specifically in boys. Men have actually a significantly larger larynx than women do, which is why men generally have a depth voice.