When Several EPSPs Arrive at the Axon Hillock from Different

question 31

Multiple Choice

When several EPSPs arrive at the axon hillock from different dendritic locations, depolarizing the postsynaptic cell to threshold for an action potential, this is an example of

• A) temporal summation.
• B) spatial summation.
• C) tetanus.
• D) the refractory state.
• E) an action potential with an abnormally high peak of depolarization.

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Definitions:

Thrust Fault

A type of geological fault where one block of the earth's crust is pushed up and over another, typically at a low angle, due to compressional forces.

Normal Fault

A normal fault is a type of fault where the hanging wall slides downward relative to the footwall due to tensional forces.

Sedimentary Layers

Strata or layers of rock that have been formed from sediment deposition over vast periods of time.

Block Diagram

A diagram that portrays in three dimensions the shape of the land surface and the subsurface distributions of rock units, folds, faults, and other geologic features.