How does the trachea aid in swallowing?
Why is it advantageous that the shape of the trachea changes when you swallow a large mouthful of food?
because pharynx is a common passage for food and air.So there is a possiblity of food passing into the trachea during swallowing ,this is then prevented by the Epiglotis.During swallowing ,the laynx moves up so that the larynx is covered by the epiglotis and no food particles can enter the trachea. occasionally,small particles of food or water may get into the larynx or trachea which automatically produces coughing .
in laymen terms yes. You have the trachea and then the esophagus. The trachea is the "hole" air travels in to get to your lungs. The esophagus is the "hole" that food goes through to get to your stomach. There's a flap of cartilage that blocks the trachea while your swallowing food, to prevent food from going into your lungs when eating.
If you mean choking/suffocation so the reason is simple. In order for the food we eat to go to the trachea instead to the esophagus, there is a cartilage tissue called the epiglottis. Its job is to block the trachea while swallowing. That is the reason we don't breath in the same time we actually swallow. When the epiglottis fails doing its job and the trachea remains open while swallowing, substances can enter the trachea…