Neurophysiology

Question 0

Produce CSF

Answer 0

Ependymal cells

Question 1

More numerous: glial cells or neurons

Answer 1

Glial cells

Question 2

Macrophage of the brain

Answer 2

Microglia

Question 3

Regulates ECF ion levels, gives mechanical support, forms BBB

Answer 3

Astrocyte

Question 4

Creates myelin in the CNS

Answer 4

Oligodendrocytes

Question 5

Creates myelin in the PNS

Answer 5

Schwann cells

Question 6

Brain tumor from non-mature neurons

Answer 6

Neuroblastoma, retinoblastoma

Question 7

Receiving portion for NT of the neuron

Answer 7

Dendrites, cell body

Question 8

Where action potential in a neuron actually starts

Answer 8

Axon hillock

Question 9

Function of myelin sheath

Answer 9

Insulator

Question 10

Unmyelinated portion of the axon

Answer 10

Nodes of ranvier

Question 11

Branches of the axon

Answer 11

Neural fibril

Question 12

Terminal portion of a neural fibril that containsNT-containing vesicles

Answer 12

Axon terminal/boutons/end-feet

Question 13

Space between 2 neurons

Answer 13

Synapse

Question 14

What do you call the death of the axon distal to the site of injury after an axon is transected?

Answer 14

Anterograde/orthograde degeneration

Question 15

What do you call the changes in the soma after an axon is transected?

Answer 15

Axonal reaction/chromatolysis

Question 16

Axonal regeneration occurs better in the CNS or PND?

Answer 16

PNS

Question 17

Make the membrane potential less negative

Answer 17

Depolarization

Question 18

Make the MP more negative

Answer 18

Hyperpolarization

Question 19

Positive charges flowing into the cell

Answer 19

Inward current

Question 20

Positive charges flowing out of the cell

Answer 20

Outward current

Question 21

MP in which AP is inevitable

Answer 21

Threshold

Question 22

Portion of the AP where MP is positive

Answer 22

Overshoot

Question 23

Portion of AP where MP< RMP

Answer 23

Undershoot (hyperpolarizing afterpotential)

Question 24

Na channel blockers of neurons

Answer 24

Tetradotoxin, saxitoxin

Question 25

K channel blockers of neurons

Answer 25

Tetraethylammonium

Question 26

Synaptic inputs that depolarize the post-synaptic cell

Answer 26

Excitatory post-synaptic potential (EPSP)

Question 27

Synaptic inputs that hyperpolarize the post-synaptic cell

Answer 27

Inhibitory post-synaptic potential (IPSP)

Question 28

2 or more presynaptic inputs arrive at postsynaptic cell simultaneously

Answer 28

Spatial summation

Question 29

2 or more presynaptic inputs arrive at postsynaptic cell in rapid succession

Answer 29

Temporal summation

Question 30

Repeated stimulation causes response of postsynaptic cell to be greater than expected

Answer 30

Nerve facilitation

Question 31

Increased release of NT & increased sensitivity to the NT

Answer 31

Long term potentiation

Question 32

Repeated stimulation causes decreased response of postsynaptic cell

Answer 32

Synaptic fatigue

Question 33

Produces mainly oxytocin

Answer 33

Paraventricular nuclei

Question 34

Produces mainly vasopressin

Answer 34

Supraoptic nuclei

Question 35

Satiety center

Answer 35

Ventromedial nuclei

Question 36

Hunger center

Answer 36

Lateral nuclei

Question 37

Sweating (heat release)

Answer 37

Anterior hypothalamus

Question 38

Shivering (heat conservation)

Answer 38

Posterior hypothalamus

Question 39

Reward center

Answer 39

Medial forebrain bundle

Question 40

Punishment center

Answer 40

Central gray area around aqueduct of Sylvius

Question 41

Social inhibition

Answer 41

Amygdala