Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
76 Cards in this Set
- Front
- Back
Acetylcholine
|
Increases gastric acid
|
|
Norepinephrine
|
Inhibitor
|
|
Gastrin
|
Increase secretion of gastric juices
|
|
Cholecystokinin
|
Release of bile into the duodenum
|
|
Secretin
|
Increased production of bicarbonate-rich pancreatic juice
|
|
Histamine
|
Increased gastric acid production
|
|
GI Tract
|
is 23-26 feet long starts at the mouth ends at the rectum
|
|
Small Intestine
|
is the longest segment of the GI, this is where absorption of nutrients to the bloodstream
|
|
Large Intestine
|
Ascending, transverse, descending to the sigmoid
|
|
Sympathetic nervous system
|
exert an inhibitory effect on the GI tract, decreasing gastric secretion and motility and causing sphincters and blood vessels to constrict
|
|
Parasympathetic nervous system
|
causes peristalsis and increased secretory activities, sphincters relax
|
|
Upper esophagus and external anal sphincter
|
are under voluntary control
|
|
Primary function of the GI tract
|
Breakdown, absorption, and elimination
|
|
The function of gastric secretions
|
breakdown food into more absorbable form and aid in the destruction of most ingested bacteria
|
|
Intrinsic factor
|
is also secreted by the gastric mucosa, combines with dietary vitamin B12 so that the vitamin can be absorbed in the ileum (no intrinsic no Vitamin B12 absorption)
|
|
Chyme
|
partially digested food mixed with gastric secretions
|
|
Duodenal secretions (small intestines)
|
come from pancreas, liver and gallbladder-digestive enzymes amylase, lipase, and bile
|
|
trypsin
|
aids in the digestion of protein
|
|
amylase
|
aids in the digestion of starch
|
|
lipase
|
aids in the digestion of fats
|
|
villi
|
small fingerlike produce enzymes and absorbs nutrients
|
|
Bacteria in the large intestine
|
assists in the completing the breakdown of waste material, especially of undigested or unabsorbed proteins and bile salt
|
|
The GI tract contains how much gases normally?
|
150ml
|
|
Pain in the GI
|
there are NO pain receptors however there are stretch receptors
|
|
Dyspepsia
|
Indigestion
|
|
Dyspepsia s/s
|
pain, discomfort, fullness, bloating, early satiety, belching, heartburn, regurgitation
|
|
Blood in the upper GI tract
|
tarry-black color
|
|
blood in the lower portion of GI
|
bright or dark red (anal bleeding if it is streaking)
|
|
Achalasia
|
absence of peristalsis of the lower esophagus resulting in difficulty swallowing, regurgitation, and into the bloodstream
|
|
What is stomach cancer?
|
Cancer of the stomach wall, no signal causitive agennts, has been associated with diets containing
*smoked foods *salted fish or meats *pickled vegetables |
|
Hiatal hernia
|
stomach moves up into the lower portion of thorax, 90% are sliding
|
|
What are clinical manifestations of stomach cancer?
|
often spreads before symptoms occur
unexplained weight loss lack of appetite indigestion abdominal pain signs and symptoms of anemia such as *pallor *fatigue *weak *Shortness of breath *dizziness --Possible abdomen distention |
|
Hiatel Hernia s/s
|
heartburn, regurgitation, and dyshagia, but at least 50% of patients are asymptomatic... may have fullness and chest pain after eating
|
|
With any hernia you have
|
the risk of hemorrhage, obstruction or strangulation
|
|
Hiatal Hernia is confirmed by
|
x-ray, barium swallow, and fluoroscopy
|
|
Diverticulum
|
is an outpouching of mucosa and submucosa that protrudes through a weak portion of musculature
|
|
Diverticulum s/s
|
difficulty swallowing, fullness in the neck, belching, regurgitation, gurgling noises while eating
|
|
Diverticulum may be confirmed by
|
Barium swallow, esophagoscpy
|
|
Foreign Bodies
|
Swallowing of a foreign body
|
|
Foreign bodies s/s
|
pain and dysphagia
|
|
Foreign bodies may be confirmed by
|
an x-ray
|
|
Chemical burns
|
swallowing of an acid or base that burns the esophagus may also happen from undissolved medication in the esophagus
|
|
Chemical burns s/s
|
emotional distraught as well as in acute pain, difficult breathing and swallowing
|
|
Gastrointestinal reflux disease commonly known as GERD
|
back flow of gastric or duodenal contents into the esophagus
|
|
GERD s/s
|
pyrois( burning sensation in the esophagus), dyspepsia(indigestion), regurgitation, dysphagia or odynophagia (pain on swallowing) hypersalivation, and esophagitis ( may mimic a heart attack)
|
|
GERD is confirmed by
|
endoscoy or barium swallow. ambulatory 12-36 hour esophageal pH monitoring is used to monitore the degree of acid reflux, bilirubin monitoring is used to measure bile reflux
|
|
Barrett's Esophagus
|
is a condition where the lining of the esophageal mucosa is altered typically associated with GERD
|
|
Barrett's Esophagus is confirmed by
|
esophagogastroduodenoscopy (EGD) as well as biopsies
|
|
Gastritis
|
inflammation of the stomach mucosa often caused by an irritant (food, medication, alcohol)
|
|
Gastritis s/s
|
abdominal discomfurt, headache, lassitude, nausea, anorexia, vomiting, hiccups...chronic gastritis s/s are anorexia, heartburn after eating, belching, sour taste in mouth or nausea and vomiting
|
|
Gastritis may be confirmed by
|
upper GI x-ray, endoscopy, histologic examination of a tissue
|
|
Helicobacter pylori
|
may cause chronic gastritis and prolonged inflammation
|
|
Gastritis is sometimes associated with achlorhydria
|
high or low levels of hydrochloric acid
|
|
What is peptic ulcer disease? (PUD)
|
develop in presence of acidic environment
erosion of the GI mucosa due to the digestive action HCl acid and pepsin stomach lining erroded or torn away from HCL or pepsin |
|
what is the connection between gastric ulcers and PUD?
|
In stomach, less common in the US, greater mortality rate, age >50 more likely to get gastric ulcers, usually result in obstruction
R/F- H. pylori, meds, smoking, bile reflux |
|
what is the connection between duodenal ulcers and PUD?
|
more common in US,
can effect any age but usually 35-40 years old R/F H. pylori is most common, smoking, alcohol, |
|
What are clinical manifestations of Gastric ulcers?
|
Gastric- dyspepsia (upset stomach) high in upper gastric
1-2 hours after meals, burning feeling if eroded clear through mucosa, food will aggravate even more, weight loss |
|
what are complications of ulcers?
|
hemorrhage- most common, duodenal more likely to bleed
|
|
what layers of the bowel wall does ulcerative colitis affect?
|
mucosa and submucosa
|
|
Complications to constipation
|
hypertension, fecal impaction, hemorrhoids, fissures, and megacolon
|
|
Chronic diarrhea
|
persists for more than 2-3 weeks and may return sporadically
|
|
acute diarrhea
|
usually last 7-14 days
|
|
Complications of diarrhea
|
include potential for cardiac dysrhythmias because of significant fluid and electrolyte loss (especially loss of potassium)
|
|
Irritable bowl syndrome (IBS)
|
functional disorder if intestinal motility
|
|
Irritable bowl syndrome (IBS) s/s
|
alteration in bowl patterns; constipation to diarrhea or both. pain, bloating abd distension (feel better when you eat and poop)
|
|
Malabsorption
|
is the inability of the digestive system to absorb one or more of the major vitamins9 especially A and B12), miners (ie, iron and calcium)
|
|
Malabsorption s/s
|
diarrhea or frequent, loose, bulky, foul-smelling stools... have an increase fat content and are grayish
|
|
complication from Malabsorption
|
failure to absorb the fat-soluble vitamins A,D, and K causes a corresponding avitaminosis
|
|
complications from Appendicitis
|
is perforation of the appendix, which can lead to peritonitis, abscess formation (collection of purulent material)
|
|
Rovsing's sign
|
may be elicited by palpating the left lower quadrant; this paradoxically causes pain to be felt in the right lower quadrant
|
|
Diverticular disease
|
diverticulum is a saclike herniation of the lining of the bowl ( mostly in the sigmoid)
|
|
Diverticulosis
|
exists when multiple diverticula are present without inflammation or symptoms
|
|
Diverticulitis
|
results when food and bacteria retained in the diverticulum produce infection and inflammation that can impede drainage and lead to perforation or abscess formation
|
|
Peritonitis
|
is onflamation of the peritoneum, the serous membrane lining the abdominal cavity and covering the viscera... caused by leakage of contents form abdominal organs into the abdominal cavity
|
|
Peritonitis is confirmed by
|
white blood count is elevated, serum electrolyte studies and an x-ray
|
|
Duodenal ulcers S/S
|
has continuous and intermittent pain
2-5 hours after meal burning, cramping in mid-gastric pain that can radiate to back food can help protect- acid eats food antacids combined with H2 receptor blockers and food, weight gain |