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30 Cards in this Set
- Front
- Back
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What are supporting cells that surround and wrap neurons? |
Neuroglia |
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Division of PNS that transmits impulses from CNS to effector organs |
Motor Division |
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Cells that have a similar action to astrocytes, but are located in the PNS |
Satellite Cells |
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Short branching extensions that serve as the main receptive or input region of neuron (#1 on the diagram) |
Dendrites |
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Increases transmission time of nerve impulse, and insulates/ protects fibers (#4 in picture) |
Myelin Sheath |
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Most common type of neuron with three or more processes, and one axon |
Multipolar |
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The processing/ interpretation of sensory input |
Integration |
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Spaces between myelin. (#3 in picture) |
Nodes of Ranvier |
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Immune system cells |
Microglia |
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Rest and digest division of Autonomic Nervous System |
Parasympathetic Nervous System |
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What is the functional and structural unit of skeletal muscle? |
Sarcomere |
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Found in thin filaments, this protein will block the binding site for myosin in absence of calcium, in order to prevent cross-bridge attachment. |
Tropomyosin |
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Contraction occurs when __________ __________ bind to TnC, which causes tropomyosin to be removed. |
Calcium Ions |
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Thick filaments have how many heads? |
Two |
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Shown in the figure below, this formation occurs when myosin and actin bind together. |
Cross-Bridge |
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This is a diagram of a ________ filament (Thick/Thin) |
Thin |
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This is a diagram of a ___________ filament (Thick/Thin). |
Thick |
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What Theory is shown in the diagram below? |
Sliding Filament Theory |
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Number 4 in this picture is a _________, also known as a muscle cell. |
Muscle Fiber |
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_________ is the largest protein in the body and is not found on either thick nor thin filaments. |
Titin |
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A change in membrane potential that has variable amplitude and duration, is conducted decrementally and has no refractory period. |
Graded Potential |
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A change in membrane potential that must reach a threshold and has a refractory period, also functions by the all-or-none potential. |
Action Potential |
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What channels are being opened during B in the graph below? |
Voltage Gated Na+ Channels |
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What channels are being opened during C in the graph below? |
Voltage Gated K+ Channels |
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What are the arrows depicting in the picture below? |
Saltatory Conduction |
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This is when a graded potential is makes an action potential more likely to occur in the postsynaptic neuron. |
Excitatory Postsynaptic Potential |
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What causes graded potentials to decay over time (as they travel down the axon)? |
Diffusion |
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What is the term for what is happening at position D in the graph below? |
Hyperpolarization |
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Which potential (graded or action) will have a bigger response with a bigger stimulus? |
Graded Potential |
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Based on the graph below what is the value for the threshold? |
-55mV |
