Science / Histology Nerve

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Can you name the Important Concepts related to Histology Nerve?

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

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