Physiology Final Exam Questions With
Complete Solutions
Approximately 60% of CO2 is carried through the bloodstream____
| | | | | | | |
A: As carboxyhemoglobin
| |
B: Physically dissolved
| |
C: Bound to O2
| | |
D: Bound to hemoglobin
| | |
E: As bicarbonate - CORRECT ANSWER✔✔-E
| | | | |
Hyperventilation of the lungs results in elevated blood pH levels, called
| | | | | | | | | | |
respiratory alkalosis. This happens because of:
| | | | |
A: An excessive loss of CO2 from the blood
| | | | | | | |
B: A decreased pCO2 in the blood
| | | | | |
C: An enhanced activity of erthroycyte carbonic anydrase
| | | | | | |
D: All of the above
| | | |
E: A and B - CORRECT ANSWER✔✔-A
| | | | | |
Where do peripheral chemoreceptors monitor oxygen and/or carbon
| | | | | | | |
dioxide levels of the blood stream?
| | | | |
,A: Pons of the brain
| | | |
B: Carotid artieris
| |
C: Lung capillaries
| |
D: Aorta
|
E: B and D - CORRECT ANSWER✔✔-E
| | | | | |
Which of the following greatly enhances the conversion of gaseous CO2
| | | | | | | | | | |
into HCO3- in muscle tissue?
| | | |
A: Carbonic anhydrase activity in RBCs
| | | | |
B: Carbonic anhydrase activity in pancreatic duct cells
| | | | | | |
C: Carbonic anhydrase activity in the blood plasma
| | | | | | |
D: Carbonic anhydrase in lung alveoli
| | | | |
E: Carbonic anhydrase activity in parietal cells of the stomach - CORRECT
| | | | | | | | | | |
ANSWER✔✔-A
|
What are the four basic digestive processes?
| | | | | |
A: Motility, secretion, digestion, and absorption
| | | | |
B: Motility, absorption, transporting, and defecating
| | | | |
C: Physical, chemical, motility, and absorption
| | | | |
D: Chewing, absorbing, transporting, and energy storage
| | | | | |
E: Chewing, swallowing, absorbing, and defecating - CORRECT
| | | | | | | |
ANSWER✔✔-A
,The hormone that stimulates the secretion of HCl by gastric parietal
| | | | | | | | | | |
cells is: |
A: Motilin from M-cells
| | |
B: Gastrin from gastric G-cells
| | | |
C: Secretin from duodenal S-cells
| | | |
D: Somatostatin
|
E: Cholecystokinin (CCK) from the duodenal C-cells - CORRECT
| | | | | | | | |
ANSWER✔✔-B
Pepsinogen, secreted by gastric chief cells, is the inactive precursor for
| | | | | | | | | | |
the enzyme pepsin. Production of pepsin from pepsinogen is enhanced
| | | | | | | | | |
by
A: HCl
|
B: Pepsin (autocatalytic)
| |
C: Gastrin
|
D: Cholecystokinin (CCK)
| |
E: A and B - CORRECT ANSWER✔✔-E
| | | | | |
Gastrin is secreted by G-cells in the antrum of the stomach in response
| | | | | | | | | | | | |
to:
A: Sympathetic stimulation
| |
, B: HCl acid secreted into the stomach
| | | | | |
C: Parasympathetic stimulation
| |
D: Pepsin secretion from chief cells
| | | | |
E: Bicarbonate in blood plasma - CORRECT ANSWER✔✔-C
| | | | | | |
Parietal cell secretion is stimulated by which of the following chemical
| | | | | | | | | |
A: Interleukin
|
B: Cholecystokinin
|
C: Histone
|
D: Cholesterol
|
E: Histamine - CORRECT ANSWER✔✔-E
| | | |
Which of the following processes in gastric secretion is termed
| | | | | | | | | |
autocatalysis?
A: The stimulation of HCl secretion by gastrin
| | | | | | |
B: The conversion of pepsinogen into pepsin by HCl
| | | | | | | |
C: The conversion of pepsinogen into pepsin by pepsin
| | | | | | | |
D: The stimulation of gastrin secretion by vagal input
| | | | | | | |
E: The buffering of H+ by bicarbonate - CORRECT ANSWER✔✔-C
| | | | | | | | |
HCl production in gastric parietal cells generates bicarbonate. What
| | | | | | | | |
prevents the cytosol of these cells to become too alkaline? Bicarbonate
| | | | | | | | | |
Complete Solutions
Approximately 60% of CO2 is carried through the bloodstream____
| | | | | | | |
A: As carboxyhemoglobin
| |
B: Physically dissolved
| |
C: Bound to O2
| | |
D: Bound to hemoglobin
| | |
E: As bicarbonate - CORRECT ANSWER✔✔-E
| | | | |
Hyperventilation of the lungs results in elevated blood pH levels, called
| | | | | | | | | | |
respiratory alkalosis. This happens because of:
| | | | |
A: An excessive loss of CO2 from the blood
| | | | | | | |
B: A decreased pCO2 in the blood
| | | | | |
C: An enhanced activity of erthroycyte carbonic anydrase
| | | | | | |
D: All of the above
| | | |
E: A and B - CORRECT ANSWER✔✔-A
| | | | | |
Where do peripheral chemoreceptors monitor oxygen and/or carbon
| | | | | | | |
dioxide levels of the blood stream?
| | | | |
,A: Pons of the brain
| | | |
B: Carotid artieris
| |
C: Lung capillaries
| |
D: Aorta
|
E: B and D - CORRECT ANSWER✔✔-E
| | | | | |
Which of the following greatly enhances the conversion of gaseous CO2
| | | | | | | | | | |
into HCO3- in muscle tissue?
| | | |
A: Carbonic anhydrase activity in RBCs
| | | | |
B: Carbonic anhydrase activity in pancreatic duct cells
| | | | | | |
C: Carbonic anhydrase activity in the blood plasma
| | | | | | |
D: Carbonic anhydrase in lung alveoli
| | | | |
E: Carbonic anhydrase activity in parietal cells of the stomach - CORRECT
| | | | | | | | | | |
ANSWER✔✔-A
|
What are the four basic digestive processes?
| | | | | |
A: Motility, secretion, digestion, and absorption
| | | | |
B: Motility, absorption, transporting, and defecating
| | | | |
C: Physical, chemical, motility, and absorption
| | | | |
D: Chewing, absorbing, transporting, and energy storage
| | | | | |
E: Chewing, swallowing, absorbing, and defecating - CORRECT
| | | | | | | |
ANSWER✔✔-A
,The hormone that stimulates the secretion of HCl by gastric parietal
| | | | | | | | | | |
cells is: |
A: Motilin from M-cells
| | |
B: Gastrin from gastric G-cells
| | | |
C: Secretin from duodenal S-cells
| | | |
D: Somatostatin
|
E: Cholecystokinin (CCK) from the duodenal C-cells - CORRECT
| | | | | | | | |
ANSWER✔✔-B
Pepsinogen, secreted by gastric chief cells, is the inactive precursor for
| | | | | | | | | | |
the enzyme pepsin. Production of pepsin from pepsinogen is enhanced
| | | | | | | | | |
by
A: HCl
|
B: Pepsin (autocatalytic)
| |
C: Gastrin
|
D: Cholecystokinin (CCK)
| |
E: A and B - CORRECT ANSWER✔✔-E
| | | | | |
Gastrin is secreted by G-cells in the antrum of the stomach in response
| | | | | | | | | | | | |
to:
A: Sympathetic stimulation
| |
, B: HCl acid secreted into the stomach
| | | | | |
C: Parasympathetic stimulation
| |
D: Pepsin secretion from chief cells
| | | | |
E: Bicarbonate in blood plasma - CORRECT ANSWER✔✔-C
| | | | | | |
Parietal cell secretion is stimulated by which of the following chemical
| | | | | | | | | |
A: Interleukin
|
B: Cholecystokinin
|
C: Histone
|
D: Cholesterol
|
E: Histamine - CORRECT ANSWER✔✔-E
| | | |
Which of the following processes in gastric secretion is termed
| | | | | | | | | |
autocatalysis?
A: The stimulation of HCl secretion by gastrin
| | | | | | |
B: The conversion of pepsinogen into pepsin by HCl
| | | | | | | |
C: The conversion of pepsinogen into pepsin by pepsin
| | | | | | | |
D: The stimulation of gastrin secretion by vagal input
| | | | | | | |
E: The buffering of H+ by bicarbonate - CORRECT ANSWER✔✔-C
| | | | | | | | |
HCl production in gastric parietal cells generates bicarbonate. What
| | | | | | | | |
prevents the cytosol of these cells to become too alkaline? Bicarbonate
| | | | | | | | | |
