Digestive System Quiz & Exam Questions Fully Solved Graded A+.
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Course
DIGESTION
Institution
DIGESTION
Part complete
Which of the following is least involved in the mechanical breakdown of food, digestion or absorption of nutrients? - correct answer the esophagus
T/F: All the chemical and mechanical phases of digestion and mechanical breakdown from the mouth ...
Which of the following is least involved in the mechanical breakdown of food, digestion or absorption of
nutrients? - correct answer the esophagus
T/F: All the chemical and mechanical phases of digestion and mechanical breakdown from the mouth
through the small intestine are directed toward changing food into forms that can pass through the
epithelial cells lining the mucosa into the underlying blood and lymphatic vessels. - correct answer
true
T/F: The major means of propulsion through the alimentary canal is peristalsis. - correct answer
true
Which of the following is not true of saliva? - correct answer contains acids that aid
in chemical digestion
All of the following are true of swallowing (deglutition) except one. Select the statement that is not true
of swallowing. - correct answer the epiglottis assists in propelling food into the
trachea
T/F: Part complete
The only essential function of the stomach is to begin the digestion of proteins. - correct answer
false
Select the best explanation for why protease enzymes are secreted in inactive forms. - correct answer
The cells producing inactive enzymes are themselves protected from the enzymes until they are safely
within the lumen of the GI tract.
Hepatocytes do not ? - correct answer produce digestive enzymes
, Digestion and absorption of which of the following would be affected the most if the liver were severely
damaged? - correct answer lipids
Which of the following is the best explanation of the benefit in the digestive system having the largest
collection of lymphoid tissue (MALT) at the distal end of the small intestine? - correct answer
The huge numbers of bacteria living in the large intestine must be prevented from entering the lumen of
the small intestine and being absorbed with food's nutrients into the blood stream.
The absorptive effectiveness of the small intestine is enhanced by increasing the surface area of the
mucosal lining. Which of the following accomplish this task? - correct answer villi &
microvilli
T/F: Part complete
The circular folds of the small intestine enhance absorption by causing the chyme to spiral, rather than
to move in a straight line, as it passes through the small intestine. - correct answer
true
A ruptured appendix is life threatening because ________. - correct answer it is
likely to cause massive infection in the abdominopelvic cavity
Which of the following is an essential role played by large intestine bacteria? - correct answer
fermentation of indegestible carbohydrates
T/F: Most nutrients are absorbed through the mucosa of the intestinal villi by active transport. - correct
answer true
Bile salts bind at their hydrophobic regions to large fat globules within the chyme that enters the
duodenum. Bile salts break up the fat globule into smaller fat droplets. This role of bile salts is best
described as? - correct answer lipid emulsification
Define digestion. - correct answer breaking food down into particles small enough
to absorb
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