Answer:
to compare a sewer overflow withthe human body, a buch of sickle cells can clog the blood stream and may cause the stream to break, and with the overflow a lot of water is in the sewer so the water push out to make it spit out the sewer pipes.
In the process of deglutation, or what is commonly known as swallowing, the bolus of food in the pharynx will be pushed down to the esophagus. In the esophagus, the epiglottis will cover the larynx so the food will not get into the airway.