Histology Nerve

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Can you name the Important Concepts related to Histology Nerve?

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true or false: Unmyelinated Axons have nodes of ranvier.
Synapse that occurs between an axon and an axon
granular appearing ergastoplasm in neuronal cell bodies
small space that separates the pre and post-synaptic cells
True or False: When the depolarization reaches the axon terminal, voltage-gated Ca channels open in the axon terminal.
True or False: Axons have nissl bodies.
release of neurotransmitters that opens anionic channels causing Cl to enter the cell (hyperpolarization)
loose connective tissue surrounding each individual nerve fiber
lipid percentage of myelin
Synapse that occurs between an axon and dendrite
transport of materials from soma to the axon terminal
True or False: Synapses can only occur from neuron to neuron.
synapse that transmit impulses via movement of ions through gap junctions
true or false: actin filaments are involved in axonal transport.
which support cell in the PNS helps clean up debris and directs regrowth of PNS axons?
dense irregular connective tissue that surrounds a peripheral nerve
True or False: Schwann Cells surround all neurons in PNS.
carries material from the axon terminal and the dendrites to the nerve cell body
Outer layer of cytoplasm is in contact with the inner layer of cytoplasm via what?
type of neuron that conveys impulses from receptor to the CNS
functional unit of the nervous system
What causes the opening of Ligand gated Na Channels to open in the post-synaptic membrane?
release of neurotransmitters that opens channels prompting an influx of Na that causes depolarization is an example of what?
processes for input of electrical signals
what molecule is required for the use of kinesin in anterograde transport?
classification of neurons that have one axon and 2 or more dendrites.
contains Golgi, mitochondria, rER (NISSL), sER, ribosomes, lipofuscin granules, cytoskeletal elements and conveys impulse to axon
type of neuron that conveys impulses from CNS to effector cell
QuestionAnswer
synapse that transmit impulses thru neurotransmitters
classification of neurons that have 1 axon and 1 dendrite
which connective tissue layer contributes to the blood-nerve barrier?
Large (~1mm) pressure and vibration receptors associated with myelinated axon.
Synapse that occurs between an axon and a cell body
Which cells make the myelin sheaths for neurons in the PNS?
surround neuron somas (ganglia) and monitor microenvironment
these neurons form a communicating and integrating network b/t sensory and motor neurons
single process for output of electrical signals
~150-μm long, fine touch frequency receptors associated with myelinated axon (dermal papillae).
True or False: Neurotransmitter is enzymatically degraded in cleft or taken back into cell and degraded in synaptic cleft by mitochondrial enzymes
spread of nerve impulse from node to node
Characterized by destruction of myelin from inflammation and subsequent scarring by non-neural cells in brain
which micotubule motor protein is used in retrograde transport?
presence of this structural component ensures rapid conduction of nerve signals
What causes the synaptic vesicles to migrate to, and fuse with the presynaptic membrane... causing the release of the Neurotransmitter
carries material from the nerve cell body to the periphery
which motor protein is involved in anterograde transport?
True or False: Neurons can repair following injury by phagocytosis of damaged portion of axon, regeneration of sheath by Schwann cell, and invasion of new sheath by sprouting of ne
connective tissue surrounding each nerve fascicle
beginning of the axon that is devoid of organelles
collections of neuronal cell bodies outside of the CNS
junction of 2 Schwann Cells
True or False: the generation of a nerve impulse depends on the summation of excitatory and inhibitory impulses that act on a neuron.
true or false: neurons are classified on the basis of the number of axons extending from the cell body.
specialized contacts between neurons that allow for transmission of info from one cell to another
one cell process that divides into axon and dendrite near the cell body
true or false: anterograde and retrograde can occur as slow transport systems.

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Created Oct 9, 2011ReportNominate
Tags:concept, important, nerve, related