Acts as a passageway for inhaled air and filtering dust., Serves as a separator between the trachea and the esophagus. The structure of the esophagus consists of 9 cartilages, the largest of which is the thyroid., It is the part that connects from the vocal cords to the thorax. The shape of a round tube Keeping the trachea open all the time, causing air to enter at all times., Serves to exchange gas., While swallowing food or drink, a small piece of tissue called the “larynx lid” covers the windpipe to prevent food from entering the wrong space.,

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