Neuro Physio

Question 1

More numerous in the brain

Answer 1

Glial cells

Question 2

Produces CSF

Answer 2

Ependymal cells

Question 3

Regulates ECF ion levels gives mechanical support; forms BBB

Answer 3

Astrocytes

Question 4

Creates myelin in the CNS

Answer 4

Oligodendrocytes

Question 5

Creates myelin in the PNS

Answer 5

Schwann cells

Question 6

Dec Ach in the brain

Answer 6

Alzheimer’s Disease

Question 7

Ach use what enzyme during synthesis?

Answer 7

Choline acetyltransferase

Question 8

Ach is produce by

Answer 8

nucleus basalis of meynert (BG)

Question 9

Dopamine is found in the

Answer 9

Substantia Nigra Pars Compacta
And Ventral tegmental Area
Hypothalamus-prolactin inhibiting factor (PIF)

Question 10

Dopamine is degraded by

Answer 10

MAO in presynaptic nerve terminals

COMT in tissue

Question 11

Activate/inhibits adenylate Cyclase

Answer 11

D1-activates (Gs)

D2-inhibit (Gi)

Question 12

NE and Epi is secreted by

Answer 12

Pons-locus cerelius
BS
Hypothalamus

Question 13

Serotonin (W) is secreted by

Answer 13

Median Raphe of the BS

Question 14

Also called as happy hormones

Answer 14

Serotonin: from tryptophan

Question 15

Serotonin is converted to

Answer 15

Melatonin in the pineal gland

Question 16

Histidine is secreted in the

Answer 16

Tuberomamillary nucleus of the hypothalamus

Question 17

Histamine actions

Answer 17

Arousal
Sleep
Circadian rythm

Question 18

Glutamate has 4 receptor

Answer 18

3 ionotropic-NMDA, Kainate, AMPA

1 metabotropic-mGluR

Question 19

Nerve cells has 2 types

Answer 19

Neurons-permanent

Neuroglia/Glial cells/supporting

Question 20

Another AP can not be elicited, no mAtter how large the stimulus

Answer 20

Absolute Refractory Period

Question 21

No AP can occur until the Na inactivation gates open

Answer 21

Ionic Basis of Absolute Refractory Period

Question 22

Action potential can be elicited only if a larger than usual inward current is provided

Answer 22

Relative Refractory Period

Question 23

Membrane potential is closer to the K equilibrium potential and farther from threshold

Answer 23

Ionic Basic of a Relative Refractory Period

Question 24

When a cell depolarized slowly, Threshold potential is passed without firing an action potential

Answer 24

Accommodation

Question 25

Synaptic inputs that depolarize the post synaptic cell ( opens Na and k chan)

Answer 25

EPSP-excitatory post synaptic potential

Question 26

Synaptic inputs that hyperpolarize the post synaptic cell ( opens Cl chan)

Answer 26

IPSP-inhibitory post synaptic potential

Question 27

2 or more presynaptic inputs arrive at post synaptic inputs arrive at post synaptic cell in rapid succession

Answer 27

Temporal Summation

Question 28

2 or more presynaptic inputs arrive at post synaptic inputs arrive at post synaptic cell simultaneously

Answer 28

Spatial Summation

Question 29

Repeated stimulation causes response of post synaptic cell to be greater than expected

Answer 29

Nerve Facilitation

Question 30

Inc released of NT and inc sensitivity to the NT

Answer 30

Long term potentiation

Question 31

Repeated stimulation causes dec response of post synaptic cell

Answer 31

Synaptic fatigue

Question 32

NF that function as proprioception, somatic motor

Answer 32

Alpha a

Question 33

NF that act as Touch, pressure

Answer 33

Alpha b

Question 34

NF act as motor to muscle spindles

Answer 34

Alpha gamma

Question 35

NF Actions are pain ,cold,touch

Answer 35

Alpha delta

Question 36

NF of type alpha

Answer 36

Myelinated, bigger diameter

Faster,