Physicians and surgeons have demanding education and training requirements. Almost all physicians complete at least 4 years of undergraduate school, 4 years of medical school, and, depending on their specialty, 3 to 8 years in internship and residency programs.lmost all physicians complete at least 4 years of undergraduate school, 4 years of medical school, and, depending on their specialty, 3 to 8 years in internship and residency programs.
The throat and esophagus. As seen in the picture, the mouth is connected to the stomach through the throat and the esophagus.
Passage way that links the digestive system and the respiratory system. What is the esophagus' role in digestion? Passage of food into the stomach-peristalsis begins to move food through the digestive system. What is the stomach's role in digestion? Mechanical breakdown with HCI- protein digestion begins.