nervous system basics

Question 1

affects the function of a protein associated with mitotic spindles and results in _____ reduced brain size

Answer 1

microcephaly

Question 2

silver stain that labels entire cell body

Answer 2

golgi stain

Question 3

father of modern neuroscience

Answer 3

ramon y cajal

Question 4

what is the reticular theory

Answer 4

that there is physical connection between synapses

Question 5

maintain microenvironment and blood brain barrier; construction of new synapses (CNS)

Answer 5

astrocytes

Question 6

myelin in CNS increase speed of electrical conduction

Answer 6

oligodendrocyte

Question 7

myelination in PNS

Answer 7

schwann cells

Question 8

innate immune cells of CNS (become macrophages for dead or dying), secrete cytokines that communicate to other cells

Answer 8

microglial cells

Question 9

subset of astros, stem cells (self renewal; give rise to all types of tissue)

Answer 9

glial stem cells

Question 10

line ventricles of CNS; make some CSF (help move csf through ventricles ; transportsvdissolved gases, nutrients)

Answer 10

ependymal cells

Question 11

specialized ependymal cells found in choroid plexus do what?

Answer 11

make majority of CSF

Question 12

support cells in PNS (found in dorsal root ganglia)

Answer 12

satellite cells

Question 13

towards CNS: sensory

Answer 13

afferent

Question 14

out of CNS: motor

Answer 14

efferent

Question 15

neuron that projects out to another area

Answer 15

projection neuron

Question 16

neuron which only projects to specific area (inhibitory)

Answer 16

local neuron

Question 17

PNS can be divided into

Answer 17

somatic and autonomic

Question 18

the autonomic NS can be further divided into

Answer 18

sympathetic and parasympathetic

Question 19

gray matter in CNS

Answer 19

nuclei

Question 20

gray matter in PNS

Answer 20

ganglion

Question 21

white matter in CNS

Answer 21

tract

Question 22

white matter in PNS

Answer 22

nerve

Question 23

area to which neuron responds (center surround)

Answer 23

receptive field

Question 24

receptiev fields of higher order neurons have areas of excitation and inhibition (many peripheral neurons converge onto one second order neuron; all info transmitted to high order neuron)

Answer 24

center surround

Question 25

information is passed on to one of two types of cells; what are they

Answer 25

projection neurons and interneurons

Question 26

a point to point neural representation of an area of the body

Answer 26

topographic map

Question 28

each sensory system is organized such that, the ____ receptive surface is preserved from the periphery to the cortex; reflects density and position of receptors

Answer 28

peripheral

Question 29

in the motor system neurons that regulate particular body parts are also clustered together however motor map does or does nor represent body parts equally?

Answer 29

Do not

Question 30

information process in the brain is ______

Answer 30

hierarchical

Question 31

at each level there is ____of information and cells at each level respond only very select information

Answer 31

convergence

Question 32

sensory and motor activities on one side of the body are mediated by cerebral hemisphere where?

Answer 32

opposite side