G.I Tract Flashcards
Name the functions of the digestive system
Ingestion Secretion Mixing + propulsion Digestion Absorption Defecation
What is the peritoneum
Double layered serous membrane that covers the abdominal and pelvic cavities
What does the parietal peritoneum do
Line the body wall
What does the visceral peritoneum do
Covers the organs
What lies between the parietal peritoneum and the the visceral peritoneum
The peritoneal cavity
Contains only serous fluid
What are intraperitoneal organs
Fully covered by peritoneum eg stomach and part of the small intestine
What are the retroperitoneal organs
Partially covered by peritoneum e.g. pancreas and part of the duodenum
What is the mysentry
Double layer of the visceral peritoneum that attaches an organ to the body wall
What is the omentum
Double layer of the visceral peritoneum that attaches one organ to another
What helps prevent food entering the nasal cavity
Uvula
What is peristalsis
the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wave-like movements which push the contents of the canal forward.
Where is bile produced
In the liver
Where is bile stored
Gall bladder
What is mechanical digestion
The breakdown of food into bolus so that it is easier to move through the tract
What is chewing also known as
Mastication
What are the 2 parts of the digestive system
GI tract - tube from mouth to anus
Accessory organs - teeth, tongue, salivary glands, liver, gall bladder, pancreas
Where does churning occur
In the stomach and large intestine
Name the 4 layers of the GI tract
Mucosa -smooth muscle
Submucosa -connective tissue, blood vessels
Muscularis - skeletal muscle, mouth, pharynx
Serosa + peritoneum - simple squamous
