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Nervous System In General
2B
41
Anatomy
Undergraduate 2
03/01/2011

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Term
Nervous systems are...
Definition
the coordinating systems of the body
Term
Nervous system is ______ activity. Ex are ______________ and ______.
Definition
rapid
movement, thinking
Term
edocrine system ________ activity. Example _________.
Definition
Slow
Growth
Term
Nervous system definition: a ______________ system of the body composed of a group of highly ____________ cells for _________ _________ _________. to a center so responses can be made.
Definition
coordinating
specialized
conducting nerve impulses
Term
The nervous system provides a control for the _______ ____________ of the body.
Definition
rapid activities
Term
The two major subdivisions of the nervous system are?
Definition
Central nervous system (CNS)
Peripheral nervous system (PNS)
Term
The CNS includes what 2 things?
Definition
brain
spinal cord
Term
The peripheral nervous system (PNS) contains _______. These can be ________ _________ or _______ ________
Definition
nerves
cranial nerves (from brain)
spinal nerves (from spine)
Term
The Six primary function of nervous tissue are:
1) to receive ________ from the ________(Receptor)
2) to transform these ________ into ______ ________ (receptor)
3) to _______ these impulses to the proper ________ ________ of the body. (neuron)
4. Process the information and determine the appropriate response. Done by _____ and ______.
5) This response is transmitted to the _______ _______. (neuron)
6) The ______ ________ carries out the response (effector)
Definition
1)Stimuli, environment
2) stimuli, nerve impulses
3)transmit, nerve center
4)brain and spinal cord
5)effector organ\
6) effector organ
Term
There are two things that cane be effectors. These are _______ and _______.
Definition
muscles, glands
Term
The nervous system has 2 principle types of cells. These are ______ cells and _________.
Definition
neuron, neroglia
Term
cytoplasmic extensions that receive information and transmit it toward the cell body
Definition
dendrites
Term
contains the nucleus and controls the metabolic activity of the neuron
Definition
cell body or soma
Term
connects the cell body the axon
Definition
axon hillock
Term
insulating substance which allows axons to conduct impulses faster
Definition
myelin
Term
________ _______ produce myelin
Definition
Glial cells
Term
There are 2 different Glial cells that produce myelin. In the CNS _____________ produce myelin. In the PNS its __________ cells.
Definition
oligodendrocytes
schwaan
Term
Gaps between segements of myelin
Definition
Nodes of Ranvier
Term
swellings at the end of the axon, involved in neruotransmitter release
Definition
synaptic terminals
Term
Gap between the axon terminal of one neuron and the dendrite of another
Definition
Synapse
Term
_________: __________ connective tissue that nurtures and protects the neurons
Definition
Neuroglia, Supportive
Term
neuroglia type #1. from fatty myelin sheaths around the most axons in the PNS ONLY.
Definition
Schwaan
Term
In Schwaan cells the insulatory material is not ________ along the axon but is interrupted at the ______ ____ _______.
Definition
continuous
nodes of ranvier
Term
Nerve impulses jump from ______ to ______ as the travel down the _____, a conduction called ________ conduction.
Definition
node to node
axon
saltatory
Term
Neruoglia type#2. Similar myelin sheaths from type#1 but is CNS ONLY
Definition
Oligodendrocytes
Term
Neuroglia type 3: Phagocytic cells that migrate through the ______ removing debris; may migrate to areas where nervous tissue is ________.
Definition
Microglia
CNS
injuried
Term
neuroglia type 4: regulates the passage of molecules from blood to the brain: helps form the ______-_______ barrier that regulates the passage of substances into the brain
Definition
astrocytes
blood-brain
Term
neuroglia type 5: line the brain chambers called _________ and help form the choroid plexus, which produces ___________(CSF)
Definition
Ependymal Cells
ventricles
cerebrospinal fluid
Term
Neuroglia type 6: Support neuron cell bodies in ganglia of ____.
Definition
Satellite
PNS
Term
Neuroglia in the CNS consists of
Definition
Astrocytes
Microglia
Oligodendrocytes
Ependymal Cells
Term
Neuroglia of PNS includes
Definition
Schwaan cells
satellite cells
Term
Neurons can be classfied in two ways. _________ and __________.
Definition
structure, function
Term
How are they neurons structurally identified?
Definition
by number of branches
Term
uni polar has ______branches
bipolar has ____ branches
multipolar has _____ braches
Definition
1
2
3 or more
Term
There are three functional classifications for nerves.
1) Sensory or ________ nerves
2) Motor or _______ nerves
3) __________________.
Definition
1) Afferent
2) Efferent
3) Interneurons
Term
neurons that transmit sensory nerve impulses from receptors to brain and spinal cord
Definition
sensory or afferent
Term
neurons that convey motor nerve impulses from the brain and spinal cord to effector muscles and glands
Definition
motor or efferent
Term
neurons that carry impulses from one nerve to another
MOST COMMMON
Definition
interneurons
Term
Interneurons are aka
Definition
internuncial neurons
Term
Neurons are specialized to recieve ______ from sensory receptors or other ______ and transfer this information along the length of the _______.
Definition
signals
neurons
axon
Term
Impulses known as _______ __________, travel the length of the axon and invade the ______ _________, thereby causing the release of neurotransmitter into the _____________.
Definition
action pontentials
nerve terminal
synapse
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