Phys 58 Flashcards

What are the three main neuron types in the cerebral cortex?

A) Bipolar, multipolar, pseudounipolar

B) Granular, fusiform, pyramidal

C) Purkinje, basket, stellate

D) Pyramidal, Purkinje, bipolar

Which cortical neurons are primarily associated with output signaling?

A) Pyramidal and fusiform cells

B) Granular and stellate cells

C) Basket and granular cells

D) Stellate and bipolar cells

Which cortical neurons are primarily associated with receiving input signals?

A) Pyramidal cells

B) Fusiform cells

C) Granular cells

D) Betz cells

Which cortical neurons send long descending fibers into the spinal cord?

A) Granular cells

B) Fusiform cells

C) Stellate cells

D) Pyramidal cells

What is the first layer of the cerebral cortex?

A) External granular layer

B) Molecular layer

C) Internal granular layer

D) Pyramidal layer

What is the second layer of the cerebral cortex?

A) Molecular layer

B) Internal granular layer

C) External granular layer

D) Fusiform layer

What is the third layer of the cerebral cortex?

A) External pyramidal layer

B) Internal granular layer

C) Molecular layer

D) Multiform layer

What is the fourth layer of the cerebral cortex?

A) External granular layer

B) Molecular layer

C) Internal pyramidal layer

D) Internal granular layer

What is the fifth layer of the cerebral cortex?

A) Fusiform layer

B) Internal pyramidal layer

C) External granular layer

D) Molecular layer

What is the sixth layer of the cerebral cortex?

A) Molecular layer

B) External pyramidal layer

C) Fusiform (multiform) layer

D) Internal granular layer

Which cortical layer receives most incoming thalamic sensory signals?

A) Layer IV

B) Layer II

C) Layer V

D) Layer VI

Which cortical layers are primarily responsible for output signaling?

A) Layers I and II

B) Layers II and III

C) Layers III and IV

D) Layers V and VI

Which cortical layers are primarily involved in intracortical association?

A) Layers IV and V

B) Layers I, II, and III

C) Layers V and VI

D) Layers III, V, and VI

Which cortical layer contains large pyramidal neurons that project to the spinal cord?

A) Layer II

B) Layer IV

C) Layer V

D) Layer VI

Which type of cortical area directly processes sensory input or produces motor output?

A) Primary cortex

B) Secondary cortex

C) Association cortex

D) Limbic cortex

Which cortical area further interprets information received from primary cortical areas?

A) Primary cortex

B) Motor cortex

C) Limbic cortex

D) Secondary cortex

Which cortical areas integrate different types of sensory information?

A) Primary sensory areas

B) Association areas

C) Primary motor areas

D) Cerebellar motor areas

Which association area integrates visual, auditory, and somatosensory information for spatial awareness?

A) Prefrontal association area

B) Limbic association area

C) Parieto-occipitotemporal association area

D) Primary motor area

Which brain region helps convert written visual information into language comprehension?

A) Broca's area

B) Primary motor cortex

C) Prefrontal cortex

D) Angular gyrus

What is the main function of the association cortex posterior to the somatosensory cortex?

A) Spatial awareness and coordination

B) Voluntary speech production

C) Regulation of gastric activity

D) Direct skeletal muscle contraction

Damage to the dominant angular gyrus can impair which ability?

A) Understanding spoken language

B) Reading written language

C) Producing facial expressions

D) Recognizing musical rhythms

A patient understands spoken words but cannot comprehend written words. Which region may be damaged?

A) Broca's area

B) Primary auditory cortex

C) Dominant angular gyrus

D) Primary motor cortex

Which brain regions contribute to the association area involved in naming objects?

A) Occipital and temporal lobes

B) Frontal and parietal lobes

C) Cerebellum and brainstem

D) Thalamus and hypothalamus

Which sensory cortical areas contribute information for naming and recognizing objects?

A) Motor and vestibular cortices

B) Olfactory and gustatory cortices

C) Somatosensory and motor cortices

D) Visual and auditory cortices

Which association area provides important sensory information to the prefrontal cortex for motor planning?

A) Limbic association area

B) Parieto-occipitotemporal association area

C) Primary auditory cortex

D) Primary visual cortex

Which circuit receives prefrontal cortical output and participates in motor planning?

A) Hippocampal-amygdala circuit

B) Cerebellar-vestibular circuit

C) Caudate-thalamic circuit

D) Visual-auditory circuit

Which cortical region is especially important for planning, reasoning, and elaboration of thought?

A) Prefrontal association cortex

B) Primary visual cortex

C) Primary auditory cortex

D) Primary somatosensory cortex

What is the main function of Broca's area?

A) Recognition of faces

B) Production of spoken language

C) Interpretation of visual signals

D) Regulation of emotional memory

Which association area is most involved in behavior, emotions, and motivation?

A) Primary motor area

B) Visual association area

C) Limbic association area

D) Auditory association area

Where is the limbic association area primarily located?

A) Anterior temporal lobe and cingulate cortex

B) Occipital pole and primary visual cortex

C) Precentral gyrus and frontal eye fields

D) Cerebellar cortex and pons

What is the primary language-related function of the dominant Wernicke's area?

A) Motor speech production

B) Voluntary muscle coordination

C) Language comprehension

D) Visual accommodation

What is the inability to recognize familiar faces called?

A) Anomia

B) Prosopagnosia

C) Alexia

D) Apraxia

Which brain region is particularly important for recognizing familiar faces?

A) Dorsolateral prefrontal cortex

B) Primary motor cortex

C) Superior parietal lobule

D) Ventral occipitotemporal cortex

Which function is particularly associated with the nondominant hemisphere's corresponding language-association regions?

A) Interpreting prosody and nonverbal communication

B) Producing grammatically correct speech

C) Reading written language exclusively

D) Controlling tongue motor movements

Damage to which brain region can cause inappropriate social behavior and impaired emotional regulation?

A) Primary visual cortex

B) Orbitofrontal cortex

C) Primary auditory cortex

D) Posterior parietal cortex

Which behavioral change can occur following damage to the ventral frontal lobe?

A) Improved impulse control

B) Increased language comprehension

C) Reduced social inhibition

D) Enhanced emotional judgment

What is the term for impaired ability to read and understand written language?

A) Dysarthria

B) Apraxia

C) Dysphonia

D) Alexia

What type of aphasia primarily impairs comprehension of spoken language?

A) Receptive aphasia

B) Expressive aphasia

C) Conduction aphasia

D) Transcortical motor aphasia

Which type of aphasia severely impairs both language comprehension and production?

A) Broca's aphasia

B) Global aphasia

C) Conduction aphasia

D) Anomic aphasia

A patient understands spoken language but struggles to produce fluent speech. Which area is most likely damaged?

A) Wernicke's area

B) Angular gyrus

C) Broca's area

D) Visual cortex

A patient speaks fluently but produces meaningless sentences and cannot understand spoken language. Which area is likely damaged?

A) Wernicke's area

B) Broca's area

C) Primary motor cortex

D) Cerebellar cortex

Damage to which structures can impair coordination and articulation of speech without necessarily causing aphasia?

A) Occipital and temporal cortices

B) Cerebellum and basal ganglia

C) Hippocampus and amygdala

D) Angular and supramarginal gyri

A patient understands language but has difficulty articulating words due to impaired motor control. What is this condition?

A) Global aphasia

B) Receptive aphasia

C) Alexia

D) Dysarthria

When hearing spoken words, which cortical region initially receives auditory information?

A) Broca's area

B) Angular gyrus

C) Primary auditory cortex

D) Primary visual cortex

After auditory information reaches the primary auditory cortex, which area is classically responsible for language comprehension?

A) Wernicke's area

B) Broca's area

C) Premotor cortex

D) Primary motor cortex

Which white matter tract connects Wernicke's area to Broca's area in the classical language pathway?

A) Corpus callosum

B) Internal capsule

C) Anterior commissure

D) Arcuate fasciculus

Damage to the arcuate fasciculus classically produces which language deficit?

A) Complete loss of comprehension

B) Impaired repetition of spoken words

C) Complete inability to read

D) Loss of facial recognition

After language planning in Broca's area, which cortical region activates the muscles needed for speech?

A) Primary visual cortex

B) Primary auditory cortex

C) Primary motor cortex

D) Somatosensory association cortex

When reading a written word aloud, which cortical region initially processes the visual information?

A) Primary visual cortex

B) Primary auditory cortex

C) Primary motor cortex

D) Prefrontal association cortex

In the classical reading pathway, visual information passes through which region before reaching Wernicke's area?

A) Broca's area

B) Primary motor cortex

C) Hippocampus

D) Angular gyrus

Which sequence correctly describes the classical pathway for repeating a spoken word?

A) Visual cortex → Broca → Wernicke

B) Auditory cortex → Wernicke → Broca

C) Motor cortex → Angular → Wernicke

D) Hippocampus → Broca → Auditory cortex

Which structure connects parts of the anterior temporal lobes, including amygdala-related regions, across hemispheres?

A) Anterior commissure

B) Posterior commissure

C) Internal capsule

D) Optic radiation

Which structure provides the major communication pathway between the cerebral hemispheres?

A) Internal capsule

B) Arcuate fasciculus

C) Corpus callosum

D) Fornix

What does the holistic theory of thought propose?

A) Thoughts arise from isolated neurons

B) Thoughts depend only on language

C) Thoughts originate exclusively in hippocampus

D) Thoughts involve distributed neural activity

What is habituation in the context of learning and memory?

A) Increased response to repeated stimuli

B) Permanent elimination of sensory neurons

C) Decreased response to repeated stimuli

D) Formation of new motor pathways

What is the fundamental mechanism underlying the formation of memories?

A) Permanent suppression of neuronal activity

B) Activity-dependent changes in synaptic strength

C) Increased production of cerebrospinal fluid

D) Progressive destruction of neural connections

Which presynaptic change contributes to habituation in classical sensory-neuron models?

A) Reduced calcium influx

B) Increased sodium influx

C) Increased serotonin release

D) Enhanced potassium channel blockade

What is sensitization in the context of learning and memory?

A) Loss of previously stored memories

B) Decreased synaptic neurotransmitter release

C) Inhibition of all sensory signaling

D) Increased responsiveness after significant stimulation

Which type of memory stores facts, events, and consciously recalled information?

A) Procedural memory

B) Declarative memory

C) Reflexive memory

D) Motor skill memory

Which type of memory is primarily responsible for learned motor skills, such as riding a bicycle?

A) Episodic memory

B) Semantic memory

C) Procedural memory

D) Working memory

According to the traditional physiological classification, intermediate long-term memory may persist for approximately how long?

A) Milliseconds to seconds

B) Seconds to minutes

C) Years to decades

D) Days to weeks

How long does short-term memory typically persist without continued rehearsal?

A) Seconds to minutes

B) Several days to weeks

C) Several months to years

D) Years to a lifetime

In classical models of synaptic facilitation, which neurotransmitter released by facilitator neurons strengthens sensory synapses?

A) Dopamine

B) Acetylcholine

C) Serotonin

D) GABA

Which intracellular second messenger increases during synaptic facilitation?

A) Cyclic GMP

B) Inositol triphosphate

C) Diacylglycerol

D) Cyclic AMP

Serotonin-mediated synaptic facilitation activates which enzyme to increase intracellular cAMP?

A) Adenylyl cyclase

B) Phospholipase A2

C) Acetylcholinesterase

D) Tyrosine hydroxylase

During classical serotonin-mediated synaptic facilitation, cAMP activates which enzyme?

A) Protein kinase C

B) Protein kinase A

C) Protein phosphatase

D) Guanylyl cyclase

Protein kinase A can prolong presynaptic action potentials by reducing activity of which channels?

A) Voltage-gated sodium channels

B) Ligand-gated chloride channels

C) Potassium channels

D) Calcium release channels

How does prolonged presynaptic depolarization increase neurotransmitter release during synaptic facilitation?

A) Increased calcium influx

B) Reduced vesicle exocytosis

C) Decreased synaptic calcium

D) Increased chloride efflux

Which combination of structural changes supports long-term strengthening of synaptic connections?

A) Fewer terminals, vesicles, and spines

B) Reduced dendritic spine formation

C) Decreased neurotransmitter release sites

D) More terminals, vesicles, and spines

Damage to which brain structure is particularly associated with difficulty forming new declarative memories?

A) Hippocampus

B) Cerebellum

C) Primary motor cortex

D) Occipital cortex

What is the process of converting initially unstable memories into more stable long-term memories called?

A) Habituation

B) Consolidation

C) Sensitization

D) Extinction

What is the term for the inability to form new memories following brain injury?

A) Retrograde amnesia

B) Procedural amnesia

C) Dissociative amnesia

D) Anterograde amnesia