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which of the following is NOT function of astrocytes

PROVIDE THE DEFENSE FOR THE CNS
(control the chem enviro, gurid migratino of young neurons, synapse info, help determine capillary permeability, anochor neurons to blood vessels, support and brace neurons)

waht are ciliated CNS meuroglia that play an active role in moving the cerebrospinal fluid called

epndymal cells

the period after an intial stimulus when a neuron is not sensitive to another stim is the

abosolute refractory period

which of the following is NOT a special characteristics of neurons

THEY ARE MITOTIC
(conduct impulses, have an exceptionally high metabolic rate, extreme longevity)

which ion channel opens in repsonse to a change in membrane pot and participates in teh generaition of conduction of action potentials

voltage gated channels

collection of nerve cell bodies outside the central nervous sytstem are called

ganglia

a neuron that has as its primary function teh job of connecting other neurons is called

internueron

saltatory conduction is made possible by

teh myelin sheath

which of the following is FALSE

A NERVE IMPULSE OCCURS IF THE EXCITATORY AND INHIBITORY EFFECTS ARE EQUAL
an inhibit post synap pot occurs if the inhibit effect is greater than the excit, causing hyperpolarization
an excit post synap pot occurs if the excit effect is greater than the inhibit effect but less than threshold

select the correct statement regarding synapses

teh synap cleft prevents an impuls from being transmitted directly from one neuron to another

neuroglia that control teh chem environ around neurons by buffering potassium and recapturing neurotransmitters are

ASTROCYTES

schwann cells are functionally similar to

oligodendrocytes

immediatley after an act pot has peaked which ion volatage gates open

potassium

an IPSP is associated with

hyperpolarization

which of the following will occur whne and EPSP is being generated on teh dendritic membrane

A SINGE TYPE FO CHANNEL WILL OPEN, PERMITTING SIMULTANEOUS FLOW OF SODIUM AND POTASSIUM

which of the following is NOT true of gradded pot

THEY INCREASE AMPLITUDE AS THEY MOVE AWAY FROM STIM POINT

in what way does the interior surface fo teh cell membrane of resting neuron differ from teh eternal enivron? the interior is ___

negatively charged and contains less sodium

neurons may be classified according to several characteristics. which of the following is correct

group c fibers are not capable of saltatory conduction

neuclei of cranial nerves V VI VII are found in

pons

teh brain stem consists of the

midbrain, medulla, and pons

teh primary auditory coriex is located in the

temporal lobe

spinocerebellar tracts ____

CARRY PROPRIORECEPTOR INPUTS TO THE CEREBELLUM

the vital centers for teh control of heart rate, respiration, and blood pressure are located in teh ____

MEDULLA

cell bodies of the sensory neurons of the spinal nerves are located in the

dorsal root ganglia of the spinal cord

which of the following generalization does NOT describe teh cerebral cortex

THE HEMISPHERES ARE EXACTLY EQUAL IN FUNCTION
no functional area of teh cortex works alone
each hemisphere is chiefly concerned with sensory and motor funcs of the contralateral side
teh cerebral cortex contains three kinds of func areas

which of these would you NOT find in teh cerebral cortex

FIBER TRACTS
unmylinated axons
cell bodies
dendrites

they hypothalamus

is teh thermostat of teh body because it regualtes temperature

two terms for the massive motor tracts serving voluntary movement are

pyramidal and corticospinal

an individual who could trace a pic of a bike with his or her figer but could nto regonize it as a bike has damage to

bisual association area

brocas area

is considered motor speech area

which part of teh cerebral cortex is involved in itellect, cognitino, recall, personality

prefront cortex

which of the follwing is NOT a part of teh basal nuclei

SUBSTANTIA NIGRA
lentifrom nucleus, globus pallidus, putamen

all of the following are structres of the limbic system EXCEPT

CAUDATE NUCLEUS
amygdalooid nucleus, cingulate gyrus, hippocampus

wihch of the follwing is NOT a midbrain structure

THIRD VENTRICLE
cerebral peduncles, red nucleus, corpora quadrigemina

which of the following is involved with motor activity

RED NUCLEI

second order neurons of bothteh specific and non specficic ascending pathways terminate in teh

thalamus

loss of ability to perform skilled motot activityes such as piano playing, with no paralysis or weakness in muscles, suggests

permotor cortex

a patient is admitted to teh rehab five ddays after a stroke. the nurses assesses muscle strength and determines he has right sided wake ness. what part of brain injured?

left hemi primary motor cortex

which of teh follwing tracts convey vibrationn and toehr specif sensations that can be precisely located

pyramidal tract

too long

too long

too long

too long

the limbic associate of teh multimodal association areas proves our

emortional impact

which of the following occurs during depolar of axon

sodium volage gated channels open

an axons resting membrane pot is maintained by

the NA/K pump

an ex of a structure or substance that moves in an axon in the retrograde direction is

damaged organelles

during the relative refractory period of an act pot, an act pot

can be generated with a strong stim

at teh threshold potential

ALL NA+ VOLTAGE GATED CHANNELS OPEN

to teh post synaptic membrane effects of a neurotranmitter are terminated by all of the follwing EXCEPT

BLOCAGE OF CA ++ VOLTAGE GATED CHANNELS

all of teh follwing descriptions refer to dorsal solumn medial lemniscal pathways EXCEPT

THEY TRANSMIT ITCH SNESATION
consist of large fibers, include a chain of 3 neurons, consist of myelinated fibers

in activation sequence for motor areas, the structure taht decides which set of muscles to contract for required movemtn is teh

primary motor cortex

what is a small deviation in resting membrane protential that causes the membrane potential to become either more or less negative

TEMPORAL POTENTIAL

which of the following is NOT true of graded pot

they increase in freq as tey move away form teh stim

which is true

if teh excit effect is greater than teh inhibitory effect but less than they thershold pot the result is substhreshodl EPSP

somatic motor cortex

FRONTAL LOBE

primary sensory cortex

PARIETAL LOBE

premotor area

insula

taste area

insula

motor speech area

frontal lobe

auditory area

temp lobe

visual cortex

occipital lobe

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