NUR401 Exam Questions with Answers
According to the text, the use of protein gradients _____ the number of molecular cues
required to wire the nervous system.
Increases
Has no effect
Decreases - ✔✔Decreases
Olfactory receptor neurons (ORNs) with high basal cAMP signaling levels express _____ levels of
Sema3A and _____ levels of Nrp1.
Low, high
Low, low
High, high
High, low - ✔✔Low, High
What type of difference between targeting events makes it possible for the same molecular
signals to perform multiple functions in the same system?
Structural
Spatial
Temporal
None of the above - ✔✔Temporal
T OR F: To overcome the difficulties that combinatorial coding imposes on signal thresholding
and interpretation, temporal separation and stepwise assembly can be used. - ✔✔True
In addition to conserving molecules, stepwise decisions could also _____ at each decision point,
as there are fewer simultaneous choices.
Decrease robustness
Reduce errors
, Increase errors
None of the above - ✔✔Reduce Errors
Which of the following is NOT considered a division of the autonomic nervous system?
Somatic nervous system
Enteric nervous system
Parasympathetic nervous system
Sympathetic nervous system - ✔✔Somatic Nervous System
T OR F: According to the text, the intestine provides mechanosensory input indicating
emptiness or fullness, while the stomach provides mechanosensory input and chemosensory
information about nutrients, irritants, and resident microorganisms - ✔✔False
Which of the following options are correct regarding cholecystokinin (CCK)? Select all that
apply.
Released by enteroendocrine cells
Appetite-reducing
Released by enterochromaffin cells
Appetite-increasing - ✔✔Released by enteroendocrine cells
Appetite-reducing
Which reflex below reduces respiration rate as a result of inflation of the lungs and activation of
stretch receptors?
Baroreflex
Hering-Breuer reflex
Respiratory reflex
None of the above - ✔✔Hering-Breuer reflex
According to the text, the use of protein gradients _____ the number of molecular cues
required to wire the nervous system.
Increases
Has no effect
Decreases - ✔✔Decreases
Olfactory receptor neurons (ORNs) with high basal cAMP signaling levels express _____ levels of
Sema3A and _____ levels of Nrp1.
Low, high
Low, low
High, high
High, low - ✔✔Low, High
What type of difference between targeting events makes it possible for the same molecular
signals to perform multiple functions in the same system?
Structural
Spatial
Temporal
None of the above - ✔✔Temporal
T OR F: To overcome the difficulties that combinatorial coding imposes on signal thresholding
and interpretation, temporal separation and stepwise assembly can be used. - ✔✔True
In addition to conserving molecules, stepwise decisions could also _____ at each decision point,
as there are fewer simultaneous choices.
Decrease robustness
Reduce errors
, Increase errors
None of the above - ✔✔Reduce Errors
Which of the following is NOT considered a division of the autonomic nervous system?
Somatic nervous system
Enteric nervous system
Parasympathetic nervous system
Sympathetic nervous system - ✔✔Somatic Nervous System
T OR F: According to the text, the intestine provides mechanosensory input indicating
emptiness or fullness, while the stomach provides mechanosensory input and chemosensory
information about nutrients, irritants, and resident microorganisms - ✔✔False
Which of the following options are correct regarding cholecystokinin (CCK)? Select all that
apply.
Released by enteroendocrine cells
Appetite-reducing
Released by enterochromaffin cells
Appetite-increasing - ✔✔Released by enteroendocrine cells
Appetite-reducing
Which reflex below reduces respiration rate as a result of inflation of the lungs and activation of
stretch receptors?
Baroreflex
Hering-Breuer reflex
Respiratory reflex
None of the above - ✔✔Hering-Breuer reflex
