HLTH 230 Lecture Notes - Lecture 2: Aspiration Pneumonia, Abdominal Pain, Aureus

• School: Queen's University
• Department: Health Studies
• Course: HLTH 230
• Professor: Jeffery Lalonde

Document Summary

Obstacles of digestion: eat, drink, breathe through our mouths. Air -> lungs: diaphragm lies below the lungs and separates upper from lower half. Food must pass the diaphragm: materials in gi tract should move slowly forward at a pace that allows all reactions to occur. Cant be happening too slow or too fast: food must be lubricated to allow for transport. Too little lubrication -> too slow: some water must be passed to eliminate waste, but most retained to prevent dehydration, enzymes digest protein, fat, and carbohydrates while the body is made of protein, fat, and carbs. Need to have a system that breaks down food, but not us: waste is excreted periodically and voluntarily digestion: the process by which food is broken down into absorbable units. Begins when food enters gastrointestinal tract (the mouth) Gastrointestinal tract: flexible muscular tube (mouth->anus) where digestion + absorption occur. Like a tube throughout the body (like a hole through the body)