exam #1 lecture quizzes Flashcards
true or false: some of the functions of the frontal cortex include higher-level cognition and coordination of motor movements
true
frontal hyperactivity can result in repressive personalities - individuals with tightly regulated emotions. what other characteristics might these individuals exhibit?
- increased likelihood of gambling addiction
- excellent ability to plan for future
- poor ability to remember lists
- general inability to make quick decisions
excellent ability to plan for future
damage to the vmPFC results in behavioral changes. after the damage the person could appear…
- hypersexual
- impulsive
- emotionally-disconnected
- seemingly logical to a fault
- a and b
- c and d
c and d - emotionally-disconnected and seemingly logical to a fault
which of the following are subregions of the limbic system? select all that apply
- hypothalamus
- amygdala
- hippocampus
- mammillary bodies
- brain stem
everything but brain stem
stimulation of the limbic system in cats leads to what behaviors?
- fight
- flight
- docility
- hypersexuality
- a and b
- c and d
a and b - fight and flight
what major brain region connected to the amygdala is likely involved in learning fear contexts
- sensory cortex
- brain stem
- prefrontal cortex
- hippocampus
- hypothalamus
hippocampus
neuroanatomy directions: the cortex is _____ relative to the limbic system and the spine is _____ relative to the hindbrain
- ventral; rostral
- dorsal; rostral
- ventral; caudal
- dorsal; caudal
dorsal; caudal
according to Paul MacLean’s macro organization model of the brain, what layer would be present in all animals with a brain?
layer 1
an individual receives an injection of adrenalin. they begin to feel warm and stressed. this is an example of what layer interactions
layer 1 to layer 2
see lecture 4 question 1 for image-based question
:)
if you inhibit an inhibitor, what happens?
network signal is increased, decreased, not effected
the network signal is increased
the neuronal network increases in sophistication/complexity with each layer (see diagram in lecture 4 question 3)
false
nitric oxide is a gas synthesized by the activation of an enzyme, and not depolarization, in the axon terminal. while it is not packaged into vesicles, it can spread across the synapse to bind to the receptors causing a change in neurochemical events. blocking NO predictably interferes with its effect on the postsynaptic neuron. however, NO is not considered a traditional NT (instead it’s considered more of a neuronal “modulator”). why?
- because it is not packaged into vesicles
- because it is not released due to depolarization
- because it is a gas
- a and b
- a and c
- all of the above
because it is not released due to depolarization
you’ve just consumed a weird alien drug that increases the amount of glutamate degradation within your synapse. (glutamate is excitatory). what do you expect will be the immediate effects on your glutamate levels and what will be the resulting effect on your postsynaptic neurons? select all that apply
- glutamate will increase
- glutamate will decrease
- postsynaptic neuron will be more likely to be excited
- postsynaptic neuron will be less likely to be excited
- glutamate will decrease
- postsynaptic neuron will be less likely to be excited
arblezil is a new drug that acts on dopamine receptors. what do you think arblezil will do to the postsynaptic neurons?
- increase likelihood of excitability
- decrease likelihood of excitability
- will have no effect
- it is impossible to say from the given information
impossible to say from the given information
