Gastro Flashcards
Most gastrointestinal disorders arise from a dysfunction in coordination of two determinants of absorption which are:
Motility and secretion.
Which of the following determines the vector of the force generated by gastrointestinal muscle mass?
Anatomical orientation of the muscle cells
Features of the intrinsic (enteral) nervous system include all of the following except it:
Begins in the wall of the oropharynx and ends in the rectum.
The Auerbach’s plexus:
Controls motor activity along the length of the gut.
The primary hormonal determinant of gastric acid secretion is ______________ and is stimulated by parasympathetic excitation.
Gastrin
The gastric hormone primarily responsible for the secretion of pepsin is:
Secretin.
The oral stage of swallowing can be involuntarily initiated by:
Signals from the medullary deglutition center.
The initial gastric mixing and propulsion motor waves in the stomach are initiated by the:
Basal electrical rhythm (BER).
The coordinated muscle effort by which chyme is delivered incrementally in milliliters into the absorptive duodenum is known as the ___________ pump.
Pyloric
Gastric acid secretion is a timed event. The phase that occurs during sleep (interdigestive phase) is characterized by what degree of acid output?
up to 30% maximal
Which of the following is true with respect to the relationship between H. pylori and gastroesophageal reflux disease (GERD)?
H. pylori may be protective against GERD.
Physiologic stress is a likely causative agent in cases of:
Gastritis.
While evaluating a biopsy report on a patient with gastric polyps, the advanced practice nurse learns that the patient has hyperplastic gastric polyps. This suggests that:
The polyps are probably benign.
Which of the following is not a true statement about irritable bowel syndrome?
Emotional stress is not considered a cofactor.
All of the following characteristics regarding inflammatory bowel disease (IBD) are true except:
Associated with H. pylori colonization.
