Lecture 4 - MC Flashcards
What is the primary function of enterocytes found in the small intestine?
A) To produce digestive enzymes
B) To absorb nutrients and provide a barrier against bacteria
C) To emulsify fats
D) To store bile
B
Where do water-soluble nutrients absorbed by enterocytes primarily go after absorption?
A) Directly to the heart
B) Into the lymphatic system
C) Through capillaries to the portal vein towards the liver
D) Directly into the bloodstream
C
What are bile acids primarily responsible for?
A) Neutralizing stomach acid
B) Absorbing vitamins
C) Emulsifying fats into smaller droplets
D) Producing digestive enzymes
C
The gallbladder releases bile into the small intestine in response to what signal?
A) Secretin
B) The presence of acidic chyme and CCK
C) Vasoactive intestinal polypeptide
D) Neuropeptide substance P
B
Which of the following enzymes is not a component of pancreatic juice?
A) Trypsinogen
B) Chymotrypsinogen
C) Pepsinogen
D) Pancreatic lipase
C
What triggers the pancreas to release its digestive juices?
A) The presence of fatty chyme
B) Secretin and CCK among other factors
C) Low pH in the small intestine
D) High glucose levels in the blood
B
The primary function of the large intestine is to:
A) Digest carbohydrates and proteins
B) Absorb water and electrolytes
C) Produce bile
D) Store bile
B
Which of the following is not a component of feces as described in the provided information?
A) Undigested fibres
B) 30% bacteria
C) Enzymes
D) 10% inorganic matter
C
What is the role of prebiotics in the large intestine?
A) They are digested by bacteria to release nutrients
B) They support the growth and activity of beneficial bacteria
C) They are used to produce bile
D) They decrease the risk of colon cancer
B
What effect does the fermentation of dietary fiber by bacteria in the colon primarily have?
A) It produces enzymes that digest protein
B) It leads to the production of short-chain fatty acids
C) It results in bile acid synthesis
D) It increases absorption of water soluble vitamins
B
