Digestive System

• Ingestion

  Taking food into the mouth
• Digestion and Absorption

  Processing of food into a form that will be assimilated into living cells
• Excretion

  Eliminating indigestible subtances and certain wastes through the anus
• Digestive tube

  9 meters
• Incisors 8

  For cutting and biting
• Canines 4

  For tearing and piercing
• Premolars 8

  For crushing and grinding
• Molars 12

  For mastication
• Peristalsis

  Series of rhythmic wavelike contractions of the muscles of the esophagus
• Stomach

  Most expanded portions of the food tube
• Small Intestine

  5 to 6 meters
• Parts of small interstine

  Duodenum

  Jejunum

  Ileum
• Cardiac Sphincter

  Closes of the top end of stomach
• Pyloric Sphincter

  closes of the bottom
• Large intestine

  Also known as Colon
• Parts of Large intestine

  Ascending colon

  Transverse colon

  Descending colon
• Liver

  The largest internal organ of the body
• Bile

  The fluid secreted by the liver which emulsifies fats
• Pancreas

  Secretes pancreatic juice that contains digestive enzymes which enters the duodenum of the small intestine
• Mastication

  Food is cut and chewed into smaller pieces with the use of our teeth
• Deglutition: the action or process of swallowing
• Carbohydrase

  The enzymes acting on carbohydrates
• Carbohydrases

  Enzymes involved in the digestion 6of carbohydrates
• Proteases

  Enzymes involved in digestion of proteins
• Lipase

  Enzyme breaking down or digesting lipids
• Villi

  very small finger-like projections in the small intestine

  -absorb digested food from the small intestine
• Constipation

  Irregular or infrequent defecation characterized by dry feces or stool
• Diarrhea

  Frequent watery fecal excretion
• Gerd

  Acid reflux disease
• Peptic Ulcer

  Painful sores in the mucous membrane that lines the stomach and the duodenum
• Gastric ulcers

  sores in the lining of the stomach
• Duodenal ulcers

  sores that develop in the first part of the small intestine
• Gastritis

  Causes stomach irritation due to the inflammation of it mucous lining
• Appendicitis

  Inflammation of the appendix
• Appendix

  Small tubelike projection located at the junction of the small and large intestine
• Food poisoning

  Microbial food-borne infection