Digestive Quiz 1 Flashcards
Digestion
Breakdown of food - mechanically and chemically
Movement
Along tract - propel •peristalsis l, churning, segmentation
Secretion
Juices, enzymes, HCl
Absorption
Into blood -> cells
Elimination
Eliminate waste
Other names of digestive system
- G.I. Tract
- Alimentary Canal
- Tube
6 digestive processes
- Ingestion
- Propulsion
- Mechanical digestion
- Chemical digestion
- Absorption
- Defecation
Ingestion
Intake of food
Propulsion
Movement through GI tract
Mechanical digestion
Change physical state - chewing
Chemical digestion
Change chemical makeup - reduce to building blocks
Defecation
Elimination of indigestible material in the form of feces
3 digestive membranes
- Peritoneum
- Omentum
- Mucous
Peritoneum
Largest serous membrane in body
A. Parietal later lines the abdominal cavity
B. Visceral layer lines the organs
Omentum
Part of the peritoneum A. Falciform ligament B. Mesentery C. Lesser omentum D. Greater omentum
Falciform ligament
Connects liver to anterior wall of cavity and diaphragm
Mesentery
Connects small intestine to posterior wall of cavity
Lesser omentum
Connects upper part of stomach and part of liver to anterior abdominal wall
Greater omentum
Double layer extending downward over abdomen from lower margin of stomach
Mucous
Epithelial tissue; inner lining of the system
5 functions of digestive system
- Digestion
- Movement
- Secretion
- Absorption
- Elimination
5 layers of hollow organs outside to inside
- Serosa– visceral peritoneum, connective tissue
- Areolar tissue– glue
- Visceral muscle– muscularis
- Submucous layer– Areolar tissue rich in blood and lymphatic vessels, nerve endings, and small glands
- Mucous membrane– epithelial tissue
