Science Quiz / Histology Nerve

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Can you name the Important Concepts related to Histology Nerve?

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

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