Unit 1: General Concepts Flashcards Preview

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Flashcards in Unit 1: General Concepts Deck (37):
1

L1: ______ are capable of myelinating multiple neurons.

Oligodendrocytes

2

L1: ______ are capable of myelinating only one neuron.

Schwann Cells

3

L1: Which imaging modality? Measures small magnetic fields induced by electrical current flux

MEG

4

L1: Which imaging modality? Measures the summation of electric potential changes in the cerebral cortex

EEG

5

L1: Which imaging modality? Records EEG during a specific task or activity

Event-Evoked Potentials

6

L1: Which type of glia? Arises embryologically outside the neural tube

Microglia

7

L1: Which type of glia? Have foot processes that envelop all CNS blood vessels

Astrocyte

8

L1: Which type of glia? Maintains ionic equilibrium by removing excess potassium that leaves cells during an action potential

Astrocyte

9

L1: Which type of glia? Major phagocytic cells of the CNS

Microglia

10

L1: Which type of glia? Myelinates axons in the CNS

Oligodendrocyte

11

L1: Which type of glia? Myelinates axons in the PNS

Schwann Cell

12

L1: Which type of glia? Play a role in maintaining the tight junctions of CNS endothelial cells

Astrocyte

13

L1: Which type of glia? Serve as high reuptake systems for recycling neurotransmitters

Astrocyte

14

L1:Gray or white matter? Cortex

Gray

15

L2: _____ postulate: changes in neuronal circuitry occur via growth at synapses

Hebb's

16

L2: ______ acts on CNS arterioles to hyperpolarize the membrane and decrease vascular tone.

EET

17

L2: ______ hydrocephalus is caused by blockage of CSF flow.

Non-communicating

18

L2: ______ hydrocephalus is caused by inability of venus sinuses to resorb CSF

Communicating

19

L2: An astrocyte metabolizes arachidonic acid to ________.

Epoxy-eicosatrienoic acid (EET)

20

L2: Gray or white matter? Body

Gray

21

L2: Gray or white matter? Fasciculus

White

22

L2: Gray or white matter? Funinculus

White

23

L2: Gray or white matter? Ganglion

Gray

24

L2: Gray or white matter? Lemniscus

White

25

L2: Gray or white matter? Nucleus

Gray

26

L2: Gray or white matter? Peduncle

White

27

L2: Gray or white matter? Tract

White

28

L2: When an astrocyte takes up glutamate, it releases stores of ________.

Arachidonic Acid

29

L2: Which imaging modality? Allows for imaging of the connectivity of the brain

Diffusion Tensor Imaging (DTI)

30

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)

31

L2: Which imaging modality? Images changes in deoxyhemoglobin concentration associated with synaptic activity

fMRI

32

L2: Which imaging modality? Involves injection of a radioactive tracer

PET

33

L2: Which imaging modality? Records membrane properties by placing needles or a surface electrode into muscle tissue

Electromyography (EMG)

34

L2: Which scientist? Determined synapses mediate communication between neurons

Sherrington

35

L2: Which scientist? Determined that neurons make up brain circuits.

Cajal

36

L2: Which scientist? Learning results from changes in the strength of the synapses of interconnected neurons.

Kandel

37

L2: Which type of glia? Upregulates molecules that inhibit axonal outgrowth following trauma

Oligodendrocyte