Digestive System 1 Flashcards
Process in which compiles foods must be taken into the GI tract
Ingestion
Process in which food is broken down into simpler molecules
Digestion
Movement of the GI tract to move food down
Motility
Digestive enzymes and other products introduced into the lumen of GI tract
Secretion
Movement through the GI mucosa into the internal environment
Absorption
Process in which the body rids waste
Elimination of feces
Hollow space within the GI tract
Lumen
Walls of the GI tract
1) mucosa (mucous membrane)
2) sub mucosa
3) muscular is
4) serosa
Difference between mucosa in esophagus and rest of GI tract
Mucosa in esophagus is made of tough, stratified sbrasion resistant epithelium and everywhere else is simple columnar
Connective tissue layer that lies just below the mucosa and contains blood vessels and nerves
Submucosa
Two layers of muscle tissue below the submucosa
Muscular is
Rhythmic wavelike contraction of the gut wall causing alternating contraction and relaxation
Peristalis
Alternating contraction of the circular later if the muscularis wishing a single region
Segmentation
Outermost membrane of the digestive tube
Serosa
Serosa also known as
Visceral peritoneum
Loops of the digestive tract are anchored to the abdominal cavity by a large double folded peritoneal tissue called
Mesentery