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Nervous System Flash Cards.

Topics: Neuron, Action potential, Nervous system Pages: 20 (996 words) Published: February 23, 2013
Front

this divison of the peripheral nervous system
includes the neurons found along the GI tract

Back

enteric nervous system

Front

name for a group of neuron cell bodies in the
CNS

Back

nucleus

Front

name for a group of neuron cell bodies in the
PNS

Back

ganglia

Front

these ions are cross the neuron cell membrane
during a hyperpolarization

Back

Cl-
K+

Page 1

Front

Back

these gates respond to chemical stimuli such as
nerutransmitters

ligand gates

Front

main extracellular cation

Back

Na+

Front

portion of the peripheral nervous system is
involved with smooth and cardic muscles

Back

autonomic nervous system

Front

this glial cell is important in forming the bloodbrain barrier

Back

astrocyte

Page 2

Front

these glial cells are macrophages and clean up
debris in the CNS

Back

microglia

Front

these glial cell forms the myelin sheath in the
CNS

Back

oligodendrocyte

Front

these glial cells forms the myelin sheath in the
PNS

Back

schwann cell

Front

this strcture of the neuron conducts info away
from the cell body

Back

axon

Page 3

Front

Back

this ion moves into the synaptic knob to bring
about the release of neurotransmitter

Ca+2

Front

Back

this ion moves across the neuron membrane
during depolarization

Na+

Front

Back

this neuron type conducts info away from the
CNS

efferent

Front

Back

this neuron type conducts info toward the CNS

afferent neuron

Page 4

Front

these are main intracellular anions

Back

phophates
protein anions

Front

these gates are found on the dendrites and cell
body of neurons

Back

ligand gates
mechanical gates

Front

this conduction type is faster and more energy
efficient and involves myelinated neurons

Back

saltatory

Front

this is the name for a bundle of axons in the
PNS

Back

nerve

Page 5

Front

Back

this is the name for a bundle of axons in the
CNS

tract

Front

Back

three factors that help produce the resting
membrane potential in neurons

release of Na into the ICF/EFC
release of K into the EFC/IFC
Na/K pump

Front

Back

three factors that STOP synaptic transmission

diffusion
enzyme degradation
take up cells

Front

there are ___ pairs of spinal nerves and
____ pairs of crainal nerves.
more regeneration after nerve damage is
possible in the PNS/CNS?

Back

12
31

PNS

Page 6

Front

diaphragm

A or S

Back

S

Front

Arrector pili muscle
A or S

Back

A

Front

styloglossus
A or S

Back

S

Front

heart
S or A

Back

A

Page 7

Front

internal urethral sphincter
a OR S

Back

A

Front

in an inhibitory postsynaptic potential the __
gates and the __ gate open resulting in
hyperpolarization and a __ intacellular fluid.
this ___ and action potential. In an excitatory
postsynaptic potential the _ gates open
resulting in depo;arization and a more _
intracellular fluid. This brings the cell _
threshold.

Back

Cl-
K
Negative
inhibits
Na+
Positive
Closer to

Front

This nerve innervates the fibularis longus

Back

Common fibular nerve

Front

Nerve innervates the muscles that extend the
forearm

Back

Radial nerve

Page 8

Front

Nerve innervates the muscles that plantar flex
the foot

Back

Tibial nerve

Front

Nerve innervates the the triceps brachii

Back

Radial nerve

Front

The funny bone

Back

Ulnar nerve

Front
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