The Length of the Cardiac Action Potential, at 200 ^-300

question 5

Multiple Choice

The length of the cardiac action potential, at 200 ^-300 msec, is dependent upon the:

• A) initial repolarization phase.
• B) repolarization phase.
• C) plateau phase.
• D) rapid depolarization phase.

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Definitions:

Unconformity

A surface in the rock record representing a period of erosion or non-deposition, separating younger strata from older ones.

Igneous Intrusion

The penetration of magma through pre-existing rock layers, solidifying below the earth's surface and forming igneous rocks.

Depositional Contact

The surface or boundary separating younger sediment or rock layers from older ones where deposition has occurred.

Surface Representing

Typically refers to a graphical or mathematical representation of the physical characteristics or topography of an area's surface.