PNB 2265 EXAM 4 PRACTICE
QUESTIONS AND ANSWERS
lipoprotein lipase is unique from pancreatic lipase because... - Correct Answers -
pancreatic lipase is found in the lumen of the small intestine
glucagon is produced by... - Correct Answers -alpha cells
insulin secretion... - Correct Answers -is stimulated by GIP
the absence of which of the following would prevent the breakdown of EtOH into
acetaldehyde? - Correct Answers -alcohol dehydrogenase
peristalsis is an example of ____ smooth muscle contractions; segmentation is an
example of ____ smooth muscle contractions - Correct Answers -phasic; phasic
during the absorptive state, which of the following nutrients is NOT stored inside the
body? - Correct Answers -protein
peristalsis is the result of ____ relaxation and _____ contraction (relative to the bolus) -
Correct Answers -distal; proximal
T/F: in the liver, amino acids undergo beta-oxidation to form pyruvate (or can be acetyl-
coa_ - Correct Answers -false
characteristics of the brush border include: - Correct Answers -both
neurons in the brain can use ____ for energy - Correct Answers -both
smooth muscle is inhibited (relaxed) by: - Correct Answers -phosphate activity
which of the following vessels brings absorbed nutrients from the small intestine to the
hepatocytes? - Correct Answers -the hepatic portal vein
Low density lipoprotein transports cholesterol ____ if the levels of LDL become too
____, the risk of cardiovascular disease increases. - Correct Answers -Away from the
liver, High
Chylomicrons are transported across the basolateral membrane through ____ so that
they can enter the _____ - Correct Answers -Exocytosis; Lacteal
Changes in H+ concentration would most likely interfere with the absorption of: - Correct
Answers -dipeptide
, Brush border enzymes catalyze a chemical reaction that produce: - Correct Answers -
galactose
Hydrochloric acid secretion increases when ______ binds to its receptor and induces an
elevation of intracellular ______.
a. Histamine; Ca2+
b. ACh; Ca2+
c. Gastrin; cAMP
d. Somatostatin; cAMP
e. Prostaglandin; Ca2+ - Correct Answers -B
Following absorption, which of the following molecules would be sent to the heart before
the liver? - Correct Answers -Fatty Acids
Pyruvate Dehydrogenase (the enzyme that breaks down pyruvate) deficiency could be
treated by: - Correct Answers -Increasing the levels of Acetyl CoA
All of the following are TRUE about leptin EXCEPT: - Correct Answers -Leptin activates
neurons in the solitary tract of the hypothalamus
The myenteric plexus is located in which of the following tissue layers? - Correct
Answers -Muscularis Externa
Which of the following ions has net absorption in duct cells of the salivary gland? -
Correct Answers -Sodium
The majority of nutrient absorption in the digestive system occurs in the: - Correct
Answers -Jejenym
All of the following will lead to increased phosphorylation of the H/K/ATPase ("Proton
Pump") EXCEPT: - Correct Answers -Muscarinic receptor inhibition
The "alkaline tide" is created by the _________________ on the ______________. -
Correct Answers -Cl/HCO3 Exchanger; Basolateral Membrane of Parietal Cells
The rate of gastric emptying can be increased by: - Correct Answers -Inhibiting smooth
muscle with Vasoactive Intestinal Peptide (VIP)
Salivary amylase produces ____________; pancreatic amylase produces ___________
- Correct Answers -Disaccharides, Disaccharides
Lipoprotein lipase is unique from pancreatic lipase because: - Correct Answers -
Pancreatic lipase is found in the lumen of the small intestine
Which of the following would stimulate the release of ghrelin - Correct Answers -Fasting
QUESTIONS AND ANSWERS
lipoprotein lipase is unique from pancreatic lipase because... - Correct Answers -
pancreatic lipase is found in the lumen of the small intestine
glucagon is produced by... - Correct Answers -alpha cells
insulin secretion... - Correct Answers -is stimulated by GIP
the absence of which of the following would prevent the breakdown of EtOH into
acetaldehyde? - Correct Answers -alcohol dehydrogenase
peristalsis is an example of ____ smooth muscle contractions; segmentation is an
example of ____ smooth muscle contractions - Correct Answers -phasic; phasic
during the absorptive state, which of the following nutrients is NOT stored inside the
body? - Correct Answers -protein
peristalsis is the result of ____ relaxation and _____ contraction (relative to the bolus) -
Correct Answers -distal; proximal
T/F: in the liver, amino acids undergo beta-oxidation to form pyruvate (or can be acetyl-
coa_ - Correct Answers -false
characteristics of the brush border include: - Correct Answers -both
neurons in the brain can use ____ for energy - Correct Answers -both
smooth muscle is inhibited (relaxed) by: - Correct Answers -phosphate activity
which of the following vessels brings absorbed nutrients from the small intestine to the
hepatocytes? - Correct Answers -the hepatic portal vein
Low density lipoprotein transports cholesterol ____ if the levels of LDL become too
____, the risk of cardiovascular disease increases. - Correct Answers -Away from the
liver, High
Chylomicrons are transported across the basolateral membrane through ____ so that
they can enter the _____ - Correct Answers -Exocytosis; Lacteal
Changes in H+ concentration would most likely interfere with the absorption of: - Correct
Answers -dipeptide
, Brush border enzymes catalyze a chemical reaction that produce: - Correct Answers -
galactose
Hydrochloric acid secretion increases when ______ binds to its receptor and induces an
elevation of intracellular ______.
a. Histamine; Ca2+
b. ACh; Ca2+
c. Gastrin; cAMP
d. Somatostatin; cAMP
e. Prostaglandin; Ca2+ - Correct Answers -B
Following absorption, which of the following molecules would be sent to the heart before
the liver? - Correct Answers -Fatty Acids
Pyruvate Dehydrogenase (the enzyme that breaks down pyruvate) deficiency could be
treated by: - Correct Answers -Increasing the levels of Acetyl CoA
All of the following are TRUE about leptin EXCEPT: - Correct Answers -Leptin activates
neurons in the solitary tract of the hypothalamus
The myenteric plexus is located in which of the following tissue layers? - Correct
Answers -Muscularis Externa
Which of the following ions has net absorption in duct cells of the salivary gland? -
Correct Answers -Sodium
The majority of nutrient absorption in the digestive system occurs in the: - Correct
Answers -Jejenym
All of the following will lead to increased phosphorylation of the H/K/ATPase ("Proton
Pump") EXCEPT: - Correct Answers -Muscarinic receptor inhibition
The "alkaline tide" is created by the _________________ on the ______________. -
Correct Answers -Cl/HCO3 Exchanger; Basolateral Membrane of Parietal Cells
The rate of gastric emptying can be increased by: - Correct Answers -Inhibiting smooth
muscle with Vasoactive Intestinal Peptide (VIP)
Salivary amylase produces ____________; pancreatic amylase produces ___________
- Correct Answers -Disaccharides, Disaccharides
Lipoprotein lipase is unique from pancreatic lipase because: - Correct Answers -
Pancreatic lipase is found in the lumen of the small intestine
Which of the following would stimulate the release of ghrelin - Correct Answers -Fasting
