Anatomy Chapter 13 Nervous System

Front 1

this aspect of the PNS brings nerve impulses to the CNS-- sensory fibers from receptors

Back 1

afferent

Front 2

this aspect of the PNS takes nerve impulses away from CNS-- motor fibers to muscles or glands (exit)

Back 2

efferent

Front 3

-made up of brain and spinal cord and responsible for:
- integration
- processing
- coordinating sensory data and motor commands
-seat for higher functions

Back 3

central nervous system

Front 4

all nerual tissue outside of CNS
- composed of different types of nerve fibers (afferent and efferent)

Back 4

peripheral nervous system

Front 5

cytoplasm around the nucleus of a neuron
- has various organelles like all cells
- aggregates of ribosomes (Nissl bodies)
- neurofilaments (give 3D structure to cell)

Back 5

perikaryon

Front 6

part of neuron that recceives information from other neurons
- composed of _______ic spines

Back 6

dendrite

Front 7

part of neuron that takes information away from neuron to another neuron; nerve fiber

Back 7

axon

Front 8

end of axon... communication between neurons

Back 8

synaptic terminal

Front 9

numerous dendrites and one axon arising from soma

Back 9

multipolar neuron

Front 10

one dedrite and one axon with soma in between

Back 10

bipolar neuron

Front 11

continuous dendrite and axon with soma off to side

Back 11

unipolar/ pseudopolar neuron

Front 12

type of neuroglia in PNS that surround neuron cell bodies in ganglia; regulate 02 and CO2, nutrients, and neurtotransmitter levels aroud neurons in ganglia

Back 12

satellite cells

Front 13

type of neuroglia in PNS that produces myelin for axons

Back 13

Schwann cell

Front 14

type of neuroglia in CNS that lines ventricles (brain) and central canal (spinal cord); assist in producing, circulating, and monitoring cerbrospinal fluid

Back 14

ependymal

Front 15

type of neuroglai in CNS that removes cell debris, wastes, and pathogens by phagocytosis

Back 15

microglia

Front 16

type of neuroglia in CNS that maintains blood-brain barrier, provides structural suppoer; regulate ion, nutrient, and dissolved gas concentrations; absorb and recycle neurotransmitters ; form scar tissue after injury

Back 16

astrocyte

Front 17

type of neuroglia that myelinate CNS axons; provide structural framework

Back 17

oligodendrocyte

Front 18

controls and adjusts activities of other systems of the body
- chemical communication with targeted tissue
-response is quick and brief
- response disappears quickly
- response modifies activities of other systems

Back 18

nervous system

Front 19

part of the neuron that contains nucleus, mitochondria, free ribosomes (Nissl bodies), perikaryon (cytoplasm surrounding nucleus), neurofilaments, neurotubules, various other organelles

Back 19

cell body/ soma

Front 20

connects initial segment of axon with cell body of axoplasm

Back 20

axon hillock

Front 21

type of afferent/ sensory neuron

- input from an external source - skin
cell body of neurons in posterior/ dorsal root ganglia
- cranial nerve ganglia

motor- efferent : output to skeletal muscles
neurons- cell bodies in CNS

Back 21

somatic

Front 22

type of afferent/ sensory neuron
- input from internal source- organs
- cell body of neuron in
- posterior/ dorsal root ganglia
- cranial nerve ganglia

motor/ efferent:
- Autonomic Nervous System
- output to cardiac muscle, smooth muscle, glands, neurons (cell bodies in CNS), neurons (cell bodies in ganglia)

Back 22

visceral

Front 23

receptors in skin- bring info from outside world to CNS such as pain, touch

Back 23

exteroceptors

Front 24

receptors in muscle and joints - tells CNS the position of the body

Back 24

proprioceptors

Front 25

receptors in organs- tells CNS about status of internal organs

Back 25

interceptors

Front 26

collection of neuronal cell bodies outside CNS

Back 26

ganglia

Front 27

around whole nerve

Back 27

epineurium

Front 28

around fascicles- bundles of axons

Back 28

perineurium

Front 29

around individual axons

Back 29

endoneurium

Front 30

supporting cells for neurons
- isolate neurons
-provide framework for support
-maintain intercellular environment
-phagocytosis
-5 times more glia than neurons
- can divide and reproduce
- called glue that keeps nervous system together

Back 30

neuroglia

Front 31

the following neuroglia are associated with CNS or PNS?
- astrocytes
- oligodendrocytes
- microglia
- ependymal cells

Back 31

CNS

Front 32

the following neuroglia are associated with CNS or PNS?
- satellite cells
-schwann cells

Back 32

PNS

Front 33

in the PNS, what makes up the gray matter?

Back 33

ganglia

Front 34

in the PNS what makes up the white matter?

Back 34

nerves

Front 35

in the CNS, what makes up gray matter?

Back 35

neurons

Front 36

in the CNS what makes up white mattr?

Back 36

tracts and columns