Gastrointestinal System Flashcards
The GI tract is what
a long hollow tube extending from the mouth to the anus
Ingested foods and fluids are broken down into molecules that are absorbed and used by the body while waste products are eliminated
The upper GI tract consists of
Mouth
Esophagus
Stomach
Functions for ingestion and initial digestion of food
The middle GI tract consists of
Small intestine (DJ ileum) Major digestive and absorption processes occur here
The lwoer GI tract consists of
Large intesting (cecum, colon, rectum) Primary func of absorption of water and electrolytes, storage and elimination of waste products
Accessory organs aid in and include what
Aid in digestion by producing digestive secretions
Include salivary glands, liver, pancreas
Major GI hormones include
Cholecystokinin
Gastrin
Secretin
S/S common to many GI disorders - nausea is what
unpleasant sensation that signals stimulation of medullary vomiting center and often preceeds vomitting
Vomiting is the forceful oral expulsion of abdominal contents
S/S common to many GI disorders - Diarrhea
passage of frequent, watery, unformed stools
S/S common to many GI disorders - Constipation
A decrease in normal elimination with excessively hard, dry stools, and difficult elimination
S/S common to many GI disorders - Obstipation
intractable constipation with resulting fecal impaction, the retention of hard dry stools in the rectum and colon
Impaction can cause partial or complete bowel obstruction
RED FLAGS - constipation can cause
abdominal pain and tenderness in anterior hip, groin or thigh regions
S/S common to many GI disorders - anorexia
loss of appetite with inability to eat
S/S common to many GI disorders - dysphagia
difficulty swallowing
S/S common to many GI disorders - achalasia
the lower esophageal sphincter fails to relax and food is trapped in esophagus
S/S common to many GI disorders - heart burn
painful burning sensation felt in esophagus in midepigastric area behind sternum or throat
S/S common to many GI disorders - abdominal pain
result of inflammation, ischemia, and mechanical stretching
RED FLAGS - referred GI pain patterns - Visceral pain from esophagus can refer to
midback
RED FLAGS - referred GI pain patterns - Midthoracic spine pain (nerve root pain) can appear as
esophageal pain
RED FLAGS - referred GI pain patterns - Visceral pain from liver, diaphragm, or pericardium can refer to
shoulder
RED FLAGS - referred GI pain patterns – Visceral pain from gallbladder, stomach, pancreas, or SI can refer to the
midback and scapular regions
RED FLAGS - referred GI pain patterns - Visceral pain from colon, appendix, or pelvic viscera can refer to
pelvis, low back, or sacrum
GI bleeding (appearing in vomit or feces) can be result of
erosive gastritis
peptic ulcers
prolonged use of NSAIDs
chronic alcohol use
Esophagus - Gastroesophageal reflux disease (GERD) is caused by
reflux or backward moveemnt of gastric contents of the stomach into the esophagus producing heartburn
Esophagus - Gastroesophageal reflux disease (GERD) - results from
failure of the lower esophageal sphincter to refulate flow of food from the esophagus into the stomach and icnreased gastric pressure
Esophagus - Gastroesophageal reflux disease (GERD) - RED FLAGS
Atypical pain may present as head and neck pain
Chest pain is sometimes mistaken for heart attack
Resp symptoms can occur
Esophagus - Gastroesophageal reflux disease (GERD) - complications
strictures and Barrett’s esophagus (a precancerous state)