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ManzoValerieDigestive - Coggle Diagram
ManzoValerieDigestive
Layers of the GI tract (including stomach)
Muscularis propria
move food down through the gut.
Serosa
secrete a lubricating fluid to reduce friction from muscle movements
Submucosa
connective tissue layer deep to and supporting the mucosa
Mucosa
innermost layer, and functions in absorption and secretion
Hollow Organs in the GI tract
Stomach
aid to digestion
Small Intestine
breaks down food from the stomach and absorbs much of the nutrients from the food
Esophagus
hollow tube that leads from the throat (pharynx) to the stomach (allows food tho pass through)
Large Intestine
absorb water and salts from the material that has not been digested as food, and get rid of any waste products left over.
Mouth
eating and speaking
Anus
opening at the far end of the digestive tract through which allows waste to leave the body
Major functions of the digestive system
Ingestion
Food enters the digestive system through the mouth
Chemical Digestion
The involvement of secretions of enzymes throughout ones digestive tract that allow enzymes to break the chemical bonds that hold food particles together, which allows food to be broken down into small, digestible parts
Mechanical Digestion
Involuntary contractions & relaxations of the muscles of your esophagus, stomach, & intestines to break down food and move it through ones digestive system
Absorption
The process of simple molecules that result from chemical digestion pass through cell membranes of the lining in the small intestine into the blood or lymph capillaries
Disorders of the digestive system
Inflammatory Bowel Disease
ongoing inflammation of all or part of the digestive tract.
Irritable Bowel Syndrome
disorder that affects the large intestine
Stomach Flu
intestinal infection marked by diarrhea, cramps, nausea, vomiting, and fever
Gastroesophageal Reflux Disease
digestive disorder that occurs when acidic stomach juices, or food and fluids back up from the stomach into the esophagus
Digestive enzymes (including names and functions)
Pepsin
produced in the stomach, helps break down proteins into amino acids
Trypsin
produced in the pancreas, also breaks down proteins
Amylase
produced in the mouth, helps break down large starch molecules into smaller sugar molecules
Pancreatic lipase
produced in the pancreas, is used to break apart fats
Major organs of the digestive system
Pancreas
makes pancreatic juices called enzymes which break down sugars, fats, and starches
Gallbladder
stores bile produced by the liver
Liver
regulates most chemical levels in the blood and excretes a product called bile which helps carry away waste products from the liver
Location of digestion and absorption of each macro-molecule
The small intestine is the organ where most of the digestion & almost all of the absorption takes place. It consists of three parts; the duodenum, jejunum, and ileum. The duodenum is where the majority of the digestion occurs while the jejunum and ileum is where the absorption takes place.