BIO 169 Exam 3 Questions with Correct Answers Latest Update 2025/2026
small intestine - Answers Enzymes for the digestion of disaccharides are produced in the
__________.
Salivary amylase will eventually be inactivated in the stomach, halting carbohydrate digestion. -
Answers Which of the following statements concerning digestion in the stomach is not true?
facial and glossopharyngeal nerves - Answers Salivary gland secretion is primarily controlled by
the :
mass movements stimulated by the gastrocolic and duodenocolic reflexes moving feces
towards the rectum **** - Answers Defecation following a meal is usually the result of
small intestine - Answers cholecystokinin is produced by the endocrine cells of the
3,1,4,2 - Answers Arrange the following in proper sequence as they occur first in the body.
1 digestion
2 elimination
3 ingestion
4 absorption
Lipids - Answers If the thoracic duct were tied off, which of the following classes of nutrients
would not enter the circulatory system at their normal rate?
1,2,3,4 **** - Answers Assume we could alter the conditions in the duodenum. Which of the
following would be consistent with inserting a large volume of highly acidic chyme which
contained a large amount of fat?(1) Increased pH
(2) Increased bile production
(3) Increased pancreatic bicarbonate production and pancreatic enzyme secretion
(4) Increased secretin and cholecystokinin
small intestine - Answers Segmental contractions are mixing contractions that occur
predominantly in the _________________
mastication, speech, and swallowing - Answers The lips, cheek, and tongue all aid in
_________________________
Pharyngeal - Answers The epiglottis covers the opening into the larynx during the _______ phase
of swallowing.
, Absorption of food - Answers Diffusion and active transport are likely to be important in:
receptor-mediated endocytosis - Answers LDLs are taken into a cell by the process of :
Decrease in absorption due to reduced surface area - Answers Celiac disease causes
degeneration of the villi of the small intestine. What is a likely effect of this degeneration?
are synthesized in intestinal epithelial cells - Answers Chylomicrons
Pepsin - Answers Which of the following enzymes digests protein?
Gastrin - Answers Which of the following would stimulate gastric secretion?
inhibit gastric motility when there is chyme in the small intestine - Answers The enterogastric
reflex serves to __________.
Stomach - Answers Which of the following organs is part of the digestive tract?
It increases the pH of the feces, which are acidic because of bacterial secretions. - Answers
What is the function of bicarbonate when it is secreted by the large intestine?
Disaccharidases - Answers Enzymes secreted by the small intestine include
liver - Answers Bile is produced by the cells of the
1,4,2,3 - Answers Arrange the following structures in order from the small intestine to the
rectum
1 Ascending colon
2 Descending colon
3 Sigmoid colon
4 Transverse colon
increases surface area for lipid digestion - Answers emulsification
Both "Detect changes in chemical composition of digestive tract contents" and "Detect stretch
of the digestive tract wall" are correct. - Answers What is the function of enteric sensory
neurons?
brush border of small intestine - Answers Contact digestion takes place in/at the __________.
-phagocytize cells.-remove sugar from the blood and store it as glycogen.-convert ammonia to
urea.-All of the choices are correct.-form phospholipids and hydroxylate vitamin D.
All of the choices are correct. - Answers Hepatocytes
small intestine - Answers Enzymes for the digestion of disaccharides are produced in the
__________.
Salivary amylase will eventually be inactivated in the stomach, halting carbohydrate digestion. -
Answers Which of the following statements concerning digestion in the stomach is not true?
facial and glossopharyngeal nerves - Answers Salivary gland secretion is primarily controlled by
the :
mass movements stimulated by the gastrocolic and duodenocolic reflexes moving feces
towards the rectum **** - Answers Defecation following a meal is usually the result of
small intestine - Answers cholecystokinin is produced by the endocrine cells of the
3,1,4,2 - Answers Arrange the following in proper sequence as they occur first in the body.
1 digestion
2 elimination
3 ingestion
4 absorption
Lipids - Answers If the thoracic duct were tied off, which of the following classes of nutrients
would not enter the circulatory system at their normal rate?
1,2,3,4 **** - Answers Assume we could alter the conditions in the duodenum. Which of the
following would be consistent with inserting a large volume of highly acidic chyme which
contained a large amount of fat?(1) Increased pH
(2) Increased bile production
(3) Increased pancreatic bicarbonate production and pancreatic enzyme secretion
(4) Increased secretin and cholecystokinin
small intestine - Answers Segmental contractions are mixing contractions that occur
predominantly in the _________________
mastication, speech, and swallowing - Answers The lips, cheek, and tongue all aid in
_________________________
Pharyngeal - Answers The epiglottis covers the opening into the larynx during the _______ phase
of swallowing.
, Absorption of food - Answers Diffusion and active transport are likely to be important in:
receptor-mediated endocytosis - Answers LDLs are taken into a cell by the process of :
Decrease in absorption due to reduced surface area - Answers Celiac disease causes
degeneration of the villi of the small intestine. What is a likely effect of this degeneration?
are synthesized in intestinal epithelial cells - Answers Chylomicrons
Pepsin - Answers Which of the following enzymes digests protein?
Gastrin - Answers Which of the following would stimulate gastric secretion?
inhibit gastric motility when there is chyme in the small intestine - Answers The enterogastric
reflex serves to __________.
Stomach - Answers Which of the following organs is part of the digestive tract?
It increases the pH of the feces, which are acidic because of bacterial secretions. - Answers
What is the function of bicarbonate when it is secreted by the large intestine?
Disaccharidases - Answers Enzymes secreted by the small intestine include
liver - Answers Bile is produced by the cells of the
1,4,2,3 - Answers Arrange the following structures in order from the small intestine to the
rectum
1 Ascending colon
2 Descending colon
3 Sigmoid colon
4 Transverse colon
increases surface area for lipid digestion - Answers emulsification
Both "Detect changes in chemical composition of digestive tract contents" and "Detect stretch
of the digestive tract wall" are correct. - Answers What is the function of enteric sensory
neurons?
brush border of small intestine - Answers Contact digestion takes place in/at the __________.
-phagocytize cells.-remove sugar from the blood and store it as glycogen.-convert ammonia to
urea.-All of the choices are correct.-form phospholipids and hydroxylate vitamin D.
All of the choices are correct. - Answers Hepatocytes
