Pathophysiology NU545 Unit 6 GI 127 Approved answers correct.
12 views 1 purchase
Course
Pathophysiology
Institution
Pathophysiology
Pathophysiology NU545 Unit 6 GI 127 Approved answers correct.
Pathophysiology NU545 Unit 6 GI 127 Approved answers correct.
Pathophysiology NU545 Unit 6 GI 127 Approved answers correct.
Pathophysiology NU545 Unit 6 GI 127 Approved answers correct.
Pathophysiology NU545 Unit 6 GI 127 Approved an...
Pathophysiology NU545 Unit 6 GI 127
Approved answers correct.
Pathophysiology NU545 Unit 6 GI 127
Approved answers correct.
Enteric Plexus - ANSWER-Intrinsic nerves are located solely within the GI tract and are
controlled by local and autonomic nervous system stimuli through the enteric plexus,
which comprises 3 nerve plexuses located in different layers of the GI walls.
-these enteric nerve circuits regulate motility reflexes, blood flow, absorption, secretions,
and immune responses.
Submucosal Plexus - ANSWER-Meissner plexus. Intrinsic nerve located soley in the GI
tract and is controlled by the ANS. Located in the muscularis mucosae
Myenteric Plexus - ANSWER-Auerback plexus. Intrinsic nerve located soley in the GI
tract and is controlled by the ANS. Located b/w the inner circular and outer longitudinal
muscle layers (tunica muscularis).
Subserosal Plexus - ANSWER-Located just beneath the serosa. Intrinsic nerve located
soley in the GI tract and is controlled by the ANS.
Upper esopagheal sphincter - ANSWER-(cricopharyngeal muscle) prevents entry of air
into the esophagus during respiration.
Lower esophageal sphincter (LES) - ANSWER-(cardiac sphincter) prevents
regurgitation from the stomach; located near the esophageal hiatus—the opening in the
diaphragm where the esophagus ends at the stomach.
Peritoneal cavity - ANSWER-Space b/w the visceral peritoneum and parietal
perioteneum; normally contains just enough fluid to lubricate the 2 layers and prevent
friction during organ movement.
Dumping Syndrome - ANSWER-The rapid emptying off hypertonic chime from the
surgically created, residual stomach into the small intestine 10 to 20 minutes after
eating (early dumping syndrome).
Saliva - ANSWER-Secreted in the mouth. Consists mostly of water that contains varying
amounts of mucus; sodium; bicarbonate; chloride; potassium; and salivary alpha-
amylase (ptyalin).
Ptyalin - ANSWER-An enzyme that initiates carbohydrate digestion in the mouth and
stomach.
, Pathophysiology NU545 Unit 6 GI 127
Approved answers correct.
Saliva - ANSWER-The bicarbonate concentration sustains a pH of about 7.4, which
neutralizes bacterial acids and prevents tooth decay.
Viral Hepatitis - ANSWER-A relatively common systemic disease that affects primarily
the liver.
Fulminant hepatitis - ANSWER-A clinical syndrome resulting in severe impairment or
necrosis of liver cells and potential liver failure.
Hepatitis G - ANSWER--discovered in the 1990s
-parenterally and sexually transmitted
-may decrease HIV viral load, increase CD4+T cell levels, and slow down HIV disease
progression
-NO association with hepatocellular carcinoma
Hepatitis E - ANSWER--transmitted by the fecal-oral route or by contaminated water
-found in developed countries and must be differentiated from drug-induced liver injury
-animal reservoirs of HEV include: domestic pigs, wild boars, and deer
-more prevalent among adults and has the highest mortality rate among pregnant
women
-no vaccine for HEV but in progress
Hepatitis D - ANSWER--the delta virus depends on HBV for its replication because the
coat of the delta virus consists of HBsAg molecules that are on the surface of HBV
-shown to suppress replication of HBV
-parenteral drug users have high incidence of HDV
-clinical course is similar to hep. A and B (although sometimes more severe)
-treatment for chronic HDV may best be treated with antiviral drugs.
Hepatitis C - ANSWER--previously known as non-A, non-B hepatitis--a parenterally
transmitted flavivirus with 6 genotypes--40% of cases involve IV drug users (with high
incidence of HIV)--co-infection with HBV is prevalent--most common cause of chronic
liver disease
-the variants of HCV make vaccine development difficult and resistance to drug therapy
is common--persistent infection with recurring acute symptoms and elevated amino-
transferase levels represent clinical presentation--half of infected individuals have a viral
response to treatment.
Intrinsic Factor - ANSWER-Secreted by mucosa of stomach-parietal cells of stomach
(oxyntic cells). Is necessary for the intestinal absorption of vitamin B12.
Gastroferrin - ANSWER-Secreted by mucosa of stomach-parietal cells (oxyntic cells).
Facilitates small intestinal absorption of iron.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BestTutor001. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.49. You're not tied to anything after your purchase.
