PNB 2274 EXAM 3 QUESTIONS AND
ANSWERS ALL CORRECT
What will happen if a subject's putamen is damaged?
a) The subject will have trouble identifying the object he/she touches.
b) The subject will be unable to talk.
c) Muscular movements will no longer be smooth and coherent.
d) Personality will change.
e) No effect - Answer- Muscular movements will no longer be smooth and coherent
Which statement regarding the hypothalamus is FALSE?
a) It is an important structure for both learning and memory.
b) It contains centers to control autonomic functions.
c) It is considered to be a key integrating center for homeostasis.
d) It contains hunger center.
e) It controls the release of anterior pituitary hormones. - Answer- It is an important
structure for both learning and memory
Experimental animals become tamer following damage to the
a) hypothalamus
b) amygdala
c) hippocampus
d) cerebral cortex
e) corpus callosum - Answer- amygdala
Damage to which area will affect the consolidation of new explicit memory?
a) hippocampus
b) basal nuclei
c) thalamus
d) cerebellum
e) hypothalamus - Answer- hippocampus
From breath to breath, which one of the following will be more subjected to a change in
pH?
a) Brain interstitial fluid
b) Plasma
c) They are similar - Answer- Brain interstitial fluid
Lower protein (acts as buffer) levels
Disruption of BBB will likely to? (Pick all that apply)
, a) increase extracellular K+
b) decrease extracellular K+
c) increase reversal potential of K (EK)
d) decrease reversal potential of K (EK) - Answer- a) increase extracellular K+
c) increase reversal potential of K (EK)
If one's blood brain barrier (BBB) is compromised
a) ion concentrations in brain interstitial fluid will be altered.
b) brain blood flow will increase.
c) other mechanisms like CSF will protect the brain.
e) there will be no affect to brain functions. - Answer- Ion concentrations in brain
interstitial fluid will be altered
The frontal lobe is involved in the following functions: (select that all apply)
personality
hypothesis generation
verbal communication
voluntary control of skeletal muscles
sensation - Answer- personality
hypothesis generation
verbal communication
voluntary control of skeletal muscles
Which is NOT a function of the blood-brain barrier?
a) It prevents brain neurons from being exposed to drugs
b) It protects brain neurons from exposure to abnormal ion levels
c) It prevents nicotine and alcohol from entering brain interstitial fluid
d) It protects brain neurons from exposure to abnormal hormone levels
e) It prevents brain neurons from being exposed to waste products in the blood -
Answer- It prevents nicotine and alcohol from entering brain interstitial fluid
Response Feedback:
Alcohol and nicotine are fat-soluble substances that can cross through the BBB.
Molecules may pass through BBB through the following way:
Passive diffusion: fat-soluble substances dissolve in the cell membrane can cross the
barrier (e.g., alcohol, nicotine and caffeine). Water-soluble substances such as penicillin
have difficulty in getting through.
Active transport: substances that the brain needs such as glucose and amino acids are
carried across by special transport proteins. Receptor-mediated transport: molecules
link up to receptors on the surface of the brain and are escorted through (e.g., insulin).
Which is NOT a function of cerebrospinal fluid?
a) CSF transports nutrients and chemicals to the brain.
b) CSF helps to reduce the effective weight of the brain.
c) CSF helps to remove waste products from the brain.
d) CSF helps to promote mitosis within neuronal tissue.
ANSWERS ALL CORRECT
What will happen if a subject's putamen is damaged?
a) The subject will have trouble identifying the object he/she touches.
b) The subject will be unable to talk.
c) Muscular movements will no longer be smooth and coherent.
d) Personality will change.
e) No effect - Answer- Muscular movements will no longer be smooth and coherent
Which statement regarding the hypothalamus is FALSE?
a) It is an important structure for both learning and memory.
b) It contains centers to control autonomic functions.
c) It is considered to be a key integrating center for homeostasis.
d) It contains hunger center.
e) It controls the release of anterior pituitary hormones. - Answer- It is an important
structure for both learning and memory
Experimental animals become tamer following damage to the
a) hypothalamus
b) amygdala
c) hippocampus
d) cerebral cortex
e) corpus callosum - Answer- amygdala
Damage to which area will affect the consolidation of new explicit memory?
a) hippocampus
b) basal nuclei
c) thalamus
d) cerebellum
e) hypothalamus - Answer- hippocampus
From breath to breath, which one of the following will be more subjected to a change in
pH?
a) Brain interstitial fluid
b) Plasma
c) They are similar - Answer- Brain interstitial fluid
Lower protein (acts as buffer) levels
Disruption of BBB will likely to? (Pick all that apply)
, a) increase extracellular K+
b) decrease extracellular K+
c) increase reversal potential of K (EK)
d) decrease reversal potential of K (EK) - Answer- a) increase extracellular K+
c) increase reversal potential of K (EK)
If one's blood brain barrier (BBB) is compromised
a) ion concentrations in brain interstitial fluid will be altered.
b) brain blood flow will increase.
c) other mechanisms like CSF will protect the brain.
e) there will be no affect to brain functions. - Answer- Ion concentrations in brain
interstitial fluid will be altered
The frontal lobe is involved in the following functions: (select that all apply)
personality
hypothesis generation
verbal communication
voluntary control of skeletal muscles
sensation - Answer- personality
hypothesis generation
verbal communication
voluntary control of skeletal muscles
Which is NOT a function of the blood-brain barrier?
a) It prevents brain neurons from being exposed to drugs
b) It protects brain neurons from exposure to abnormal ion levels
c) It prevents nicotine and alcohol from entering brain interstitial fluid
d) It protects brain neurons from exposure to abnormal hormone levels
e) It prevents brain neurons from being exposed to waste products in the blood -
Answer- It prevents nicotine and alcohol from entering brain interstitial fluid
Response Feedback:
Alcohol and nicotine are fat-soluble substances that can cross through the BBB.
Molecules may pass through BBB through the following way:
Passive diffusion: fat-soluble substances dissolve in the cell membrane can cross the
barrier (e.g., alcohol, nicotine and caffeine). Water-soluble substances such as penicillin
have difficulty in getting through.
Active transport: substances that the brain needs such as glucose and amino acids are
carried across by special transport proteins. Receptor-mediated transport: molecules
link up to receptors on the surface of the brain and are escorted through (e.g., insulin).
Which is NOT a function of cerebrospinal fluid?
a) CSF transports nutrients and chemicals to the brain.
b) CSF helps to reduce the effective weight of the brain.
c) CSF helps to remove waste products from the brain.
d) CSF helps to promote mitosis within neuronal tissue.
