Unit 1: General Concepts Flashcards
L1: ______ are capable of myelinating multiple neurons.
Oligodendrocytes
L1: ______ are capable of myelinating only one neuron.
Schwann Cells
L1: Which imaging modality? Measures small magnetic fields induced by electrical current flux
MEG
L1: Which imaging modality? Measures the summation of electric potential changes in the cerebral cortex
EEG
L1: Which imaging modality? Records EEG during a specific task or activity
Event-Evoked Potentials
L1: Which type of glia? Arises embryologically outside the neural tube
Microglia
L1: Which type of glia? Have foot processes that envelop all CNS blood vessels
Astrocyte
L1: Which type of glia? Maintains ionic equilibrium by removing excess potassium that leaves cells during an action potential
Astrocyte
L1: Which type of glia? Major phagocytic cells of the CNS
Microglia
L1: Which type of glia? Myelinates axons in the CNS
Oligodendrocyte
L1: Which type of glia? Myelinates axons in the PNS
Schwann Cell
L1: Which type of glia? Play a role in maintaining the tight junctions of CNS endothelial cells
Astrocyte
L1: Which type of glia? Serve as high reuptake systems for recycling neurotransmitters
Astrocyte
L1:Gray or white matter? Cortex
Gray
L2: _____ postulate: changes in neuronal circuitry occur via growth at synapses
Hebb’s
L2: ______ acts on CNS arterioles to hyperpolarize the membrane and decrease vascular tone.
EET
L2: ______ hydrocephalus is caused by blockage of CSF flow.
Non-communicating
L2: ______ hydrocephalus is caused by inability of venus sinuses to resorb CSF
Communicating
L2: An astrocyte metabolizes arachidonic acid to ________.
Epoxy-eicosatrienoic acid (EET)
L2: Gray or white matter? Body
Gray
L2: Gray or white matter? Fasciculus
White
L2: Gray or white matter? Funinculus
White
L2: Gray or white matter? Ganglion
Gray
L2: Gray or white matter? Lemniscus
White
L2: Gray or white matter? Nucleus
Gray
L2: Gray or white matter? Peduncle
White
L2: Gray or white matter? Tract
White
L2: When an astrocyte takes up glutamate, it releases stores of ________.
Arachidonic Acid
L2: Which imaging modality? Allows for imaging of the connectivity of the brain
Diffusion Tensor Imaging (DTI)
L2: Which imaging modality? Directly measures the integrity of white matter tracts by using directionality of water diffusion in the brain
Diffusion Tensor Imaging (DTI)
L2: Which imaging modality? Images changes in deoxyhemoglobin concentration associated with synaptic activity
fMRI
L2: Which imaging modality? Involves injection of a radioactive tracer
PET
L2: Which imaging modality? Records membrane properties by placing needles or a surface electrode into muscle tissue
Electromyography (EMG)
L2: Which scientist? Determined synapses mediate communication between neurons
Sherrington
L2: Which scientist? Determined that neurons make up brain circuits.
Cajal
L2: Which scientist? Learning results from changes in the strength of the synapses of interconnected neurons.
Kandel
L2: Which type of glia? Upregulates molecules that inhibit axonal outgrowth following trauma
Oligodendrocyte
