PNB 2265 Exam 3 Prep 2026 | Practice Questions with
Answers | Latest Update
1. Peristalsis differs from segmentation in that ____ _.
peristalsis promotes net forward movement of the bolus
peristalsis requires coordination of longitudinal muscle activity
peristalsis is a form of motility
peristalsis involves contraction of smooth muscle
2. The brush border refers to the:
papillae of the tongue
haustra of the colon
microvilli of the SI
rugae of the stomach
3. Which nutrient is primarily utilized for immediate energy during the
absorptive state rather than being stored?
Glucose
Amino acids
Vitamins
Fatty acids
4. Which hormone is primarily responsible for stimulating insulin secretion?
Glucagon
Cortisol
, Glucose
Epinephrine
5. Describe the role of lipoprotein lipase in lipid metabolism and how it differs
from pancreatic lipase.
Lipoprotein lipase is involved in protein digestion, whereas pancreatic
lipase is involved in carbohydrate digestion.
Lipoprotein lipase hydrolyzes triglycerides in lipoproteins, while
pancreatic lipase acts in the digestive tract to break down dietary
fats.
Lipoprotein lipase is secreted by the pancreas, while pancreatic lipase
is secreted by adipose tissue.
Lipoprotein lipase functions only in the liver, while pancreatic lipase
functions throughout the body.
6. What is the name of the vessel that transports absorbed nutrients from the
small intestine to the liver?
Inferior vena cava
Aorta
Pulmonary vein
Hepatic portal vein
7. Which of the following vessels brings absorbed nutrients from the small
intestine to the hepatocytes?
hepatic vein
the hepatic portal vein
the hepatic artery
Answers | Latest Update
1. Peristalsis differs from segmentation in that ____ _.
peristalsis promotes net forward movement of the bolus
peristalsis requires coordination of longitudinal muscle activity
peristalsis is a form of motility
peristalsis involves contraction of smooth muscle
2. The brush border refers to the:
papillae of the tongue
haustra of the colon
microvilli of the SI
rugae of the stomach
3. Which nutrient is primarily utilized for immediate energy during the
absorptive state rather than being stored?
Glucose
Amino acids
Vitamins
Fatty acids
4. Which hormone is primarily responsible for stimulating insulin secretion?
Glucagon
Cortisol
, Glucose
Epinephrine
5. Describe the role of lipoprotein lipase in lipid metabolism and how it differs
from pancreatic lipase.
Lipoprotein lipase is involved in protein digestion, whereas pancreatic
lipase is involved in carbohydrate digestion.
Lipoprotein lipase hydrolyzes triglycerides in lipoproteins, while
pancreatic lipase acts in the digestive tract to break down dietary
fats.
Lipoprotein lipase is secreted by the pancreas, while pancreatic lipase
is secreted by adipose tissue.
Lipoprotein lipase functions only in the liver, while pancreatic lipase
functions throughout the body.
6. What is the name of the vessel that transports absorbed nutrients from the
small intestine to the liver?
Inferior vena cava
Aorta
Pulmonary vein
Hepatic portal vein
7. Which of the following vessels brings absorbed nutrients from the small
intestine to the hepatocytes?
hepatic vein
the hepatic portal vein
the hepatic artery
