knes 205- chapter 7 the nervous system

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32 Terms

1

arachn/o

spider

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2

cephal/o

head

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3

cerebell/o

cerebellum

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4

cerebr/o

cerebrum; also, the brain in general

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5

cortic/o

outer layer or covering

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6

crani/o

cranium, skull

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7

encephal/o

brain

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8

gangli/o

swelling or knot

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9

ganglion/o

swelling or knot

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10

gli/o

glue

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11

hydr/o

water

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12

iatr/o

physician; to treat

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13

-mania

mental abnormality or obsession

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14

meningi/o

membrane

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15

ment/o

referring to the mind

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16

-mnesia

memory

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17

myel/o

in connection with the nervous system, refers to the spinal cord and medulla oblongata

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18

neur/o

nerve, nerve tissue

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19

-oid

resembling

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20

-paresis

slight paralysis

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21

-phasia

speech

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22

-phobia

fear

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23

-plegia

paralysis

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24

psych/o

mind

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25

schiz/o

to split

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26

spin/o

spine

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27

Function of the nervous system

-most complex system in the body

-coordinates involuntary and voluntary actions

-maintains homeostatis in the body

-two major divisions: central nervous system (cns), peripheral nervous system (pns)

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28

Neurons

(nerve cells)

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29

neuroglia

separated, supported, and protected by specialized cells

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30

what do neurons carry?

electrical messages that coordinate the exchange of information between the body’s internal and external environment

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31

parts of a neuron cell

cell body: contains nucleus and genetic material

dendrites: receive and transmit messages

axon: conducts nerve impulses; covered by myelin, a white fatty material that provides protection and insulation

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