A+P Cns And Pns

Front 1

sensory or afferent goes where?

Back 1

toward the brain

Front 2

motor or efferent goes where?

Back 2

away from the brain

Front 3

CNS contains ____
PNS contains ______

Back 3

brain and spinal cord
nerves outside CNS, spinal/cranial

Front 4

what 2 fibers send impulses to CNS

Back 4

somatic-skeletal muscle,skin
visceral-liver etc

Front 5

what 2 fibers send impulses from CNS

Back 5

somatic(voluntary)-skeletal muscle only
autonomic(invol)-digestive,respiratory

Front 6

Autonomic is broken down into two subdivisions?

Back 6

sympathetic-fight or flight
parasympathetic-rest/digest system

Front 7

nervous tissue in PNS and CNS is made up of ?

Back 7

nerve cells (neurons)
neuroglia (supporting cells)

Front 8

what are the 4 neuroglias of the CNS?

Back 8

astrocytes-anchor
microglial-protection against bacteria
ependymal- CSF washing,lines cavities of brain
oligodendryocytes-wrap around nerve fibers

Front 9

What are the 2 neurglias of PNS?

Back 9

satellite-like astrocyte, surrond neurons cell bodies
schwann-like oligodendrocyte, wrap around large nerves

Front 10

_________ always travels in one direction

Back 10

electrical current

Front 11

a cluster of cell bodies in
CNS called?
PNS called?

Back 11

nuclei-in brain and spinal cord
ganglia-in cell bodies

Front 12

this term is for cell body to terminal movement?
this term is for terminal to cell body movement?

Back 12

anterograde
retrograde

Front 13

myelintated fibers consist of this matter

Back 13

white

Front 14

unmyelinated fibers and cell bodies come from this matter

Back 14

gray

Front 15

3 classifications of neurons structrually?

Back 15

mutlipolar, unipolar, and bipolar

Front 16

this classification of neuron structurally is the most abundant

Back 16

multipolar

Front 17

this classification of neuron structurally has 2 processes:axon and dendrite and is found in sense organs

Back 17

bipolar

Front 18

this classification of neuron structurally comes from 1 process, and most are sensory neurons in PNS

Back 18

unipolar

Front 19

this current is located in the dendrites and cell body is called?

Back 19

graded respones-weak

Front 20

this current is located in the axon, sacrolemma, and t-tubules and is called?

Back 20

action potential

Front 21

this response is short lived, decrease in strength with distance

Back 21

graded response

Front 22

this response is large, doesnt decrease in strength

Back 22

action potential

Front 23

the dendrites and cell body have this gated ion channel and the axon, sarcolemma, and t-tubules have this gated ion channel?

Back 23

chemical/mechanical
voltage

Front 24

all plasma membranes are _____ at rest?

Back 24

polarized

Front 25

at -70mv its called?

Back 25

resting membrane potential

Front 26

the inside of the cell is more positive than when at rest is called?

Back 26

depolarization

Front 27

leaky channels are found where? chemically/mech. found where? voltage found where?

Back 27

everywhere on membrane
dendrites and cell body
on axon, one after the other