PNB 2265 - Exam 3 questions and answers
2026\2027 A+ Grade
Amino acids absorbed in the small intestine will follow which path?
- correct answer Villus capillary, hepatic portal vein, liver lobule, hepatic artery
Pyruvate Dehydrogenase (the enzyme that breaks down pyruvate) deficiency could be treated by:
- correct answer Increasing the levels of Acetyl CoA
All of the following are TRUE about leptin EXCEPT:
- correct answer Leptin activates neurons in the solitary tract of the hypothalamus
The majority of nutrient absorption in the digestive system occurs in the:
- correct answer Jejenum
All of the following will lead to increased phosphorylation of the H/K/ATPase ("Proton Pump") EXCEPT:
- correct answer Muscarinic receptor inhibition
In skeletal muscles, amino acids undergo beta-oxidation to form Acetyl-CoA
- correct answer False
The "alkaline tide" is created by the _________________ on the ______________.
- correct answer Cl/HCO3 Exchanger; Basolateral Membrane of Parietal Cells
The rate of gastric emptying can be increased by:
- correct answer Inhibiting smooth muscle with Vasoactive Intestinal Peptide (VIP)
Salivary amylase produces ____________; pancreatic amylase produces ___________
- correct answer Disaccharides, Disaccharides
, Lipoprotein lipase is unique from pancreatic lipase because:
- correct answer Pancreatic lipase is found in the lumen of the small intestine
Which of the following would stimulate the release of Ghrelin?
- correct answer Fasting
All of the following are characteristics of the absorptive state EXCEPT:
- correct answer Increased glycogenolysis
In comparison to the primary secretion coming from the acinus, saliva that has passed through the duct
would be higher in Chloride ions.
- correct answer False
Fructose crosses the apical membrane of enterocytes via _______________ and the basolateral
membrane via _____________.
- correct answer Diffusion; Diffusion
Which of the following structures is made from skeletal muscle?
- correct answer The upper esophageal sphincter
During the absorptive state, which of the following nutrients is NOT stored inside the body?
- correct answer Protein
Which of the following might be a suitable treatment for Achalasia?
- correct answer Blocking smooth muscle calcium channels
Don Draper visited his primary care doctor complaining of heartburn. His doctor explained that his
habitual use of whiskey and cigarettes led to the development of ________________ caused by
_______________.
- correct answer Reflux, Reduced Esophageal Pressure
Which of the following statements about GI motility is FALSE?
- correct answer Smooth muscle contraction is stimulated by cAMP
2026\2027 A+ Grade
Amino acids absorbed in the small intestine will follow which path?
- correct answer Villus capillary, hepatic portal vein, liver lobule, hepatic artery
Pyruvate Dehydrogenase (the enzyme that breaks down pyruvate) deficiency could be treated by:
- correct answer Increasing the levels of Acetyl CoA
All of the following are TRUE about leptin EXCEPT:
- correct answer Leptin activates neurons in the solitary tract of the hypothalamus
The majority of nutrient absorption in the digestive system occurs in the:
- correct answer Jejenum
All of the following will lead to increased phosphorylation of the H/K/ATPase ("Proton Pump") EXCEPT:
- correct answer Muscarinic receptor inhibition
In skeletal muscles, amino acids undergo beta-oxidation to form Acetyl-CoA
- correct answer False
The "alkaline tide" is created by the _________________ on the ______________.
- correct answer Cl/HCO3 Exchanger; Basolateral Membrane of Parietal Cells
The rate of gastric emptying can be increased by:
- correct answer Inhibiting smooth muscle with Vasoactive Intestinal Peptide (VIP)
Salivary amylase produces ____________; pancreatic amylase produces ___________
- correct answer Disaccharides, Disaccharides
, Lipoprotein lipase is unique from pancreatic lipase because:
- correct answer Pancreatic lipase is found in the lumen of the small intestine
Which of the following would stimulate the release of Ghrelin?
- correct answer Fasting
All of the following are characteristics of the absorptive state EXCEPT:
- correct answer Increased glycogenolysis
In comparison to the primary secretion coming from the acinus, saliva that has passed through the duct
would be higher in Chloride ions.
- correct answer False
Fructose crosses the apical membrane of enterocytes via _______________ and the basolateral
membrane via _____________.
- correct answer Diffusion; Diffusion
Which of the following structures is made from skeletal muscle?
- correct answer The upper esophageal sphincter
During the absorptive state, which of the following nutrients is NOT stored inside the body?
- correct answer Protein
Which of the following might be a suitable treatment for Achalasia?
- correct answer Blocking smooth muscle calcium channels
Don Draper visited his primary care doctor complaining of heartburn. His doctor explained that his
habitual use of whiskey and cigarettes led to the development of ________________ caused by
_______________.
- correct answer Reflux, Reduced Esophageal Pressure
Which of the following statements about GI motility is FALSE?
- correct answer Smooth muscle contraction is stimulated by cAMP
