ANATOMY

Detailed explanation-1: -Food passes from the pharynx into the esophagus; the upper esophageal sphincter then immediately closes, preventing flow of food back into the mouth. Once food is in the esophagus, the final phase of swallowing begins. The larynx lowers, the glottis opens, and breathing resumes.

Detailed explanation-2: -Because of its location, the pharynx helps the respiratory system by allowing air to pass through the trachea, or windpipe, to your lungs. For digestion, the muscles surrounding the pharynx work together to send food and drink into the esophagus.

Detailed explanation-3: -The term bolus applies to this mixture of food and solutions until they are passed into the stomach. Once the bolus reaches the stomach, mixes with gastric juices, and becomes reduced in size, the food mass becomes known as chyme.