The Following Question Refers to Comparative Concentrations, Permeabilities, and Potentials

question 142

Multiple Choice

The following question refers to comparative concentrations, permeabilities, and potentials under various circumstances. Indicate the relationship between the two items listed in each situation by filling the appropriate letter in the blank using the following answer code:
-A. concentration of Na⁺ in the extracellular fluid
B. concentration of Na⁺ in the intracellular fluid of a nerve cell immediately following an action potential (assume that the Na⁺-K⁺ pump has not yet acted)

• A)A is greater than B.
• B)B is greater than A.
• C)A and B are equal.

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Definitions:

Chunking

A memory strategy that involves grouping individual pieces of information together into larger units to aid in recall.

Sensory Memory

The shortest-term element of memory which allows the retention of impressions of sensory information after the original stimuli have ended.

Atkinson-Shiffrin Theory

A model of memory proposed by Richard Atkinson and Richard Shiffrin that describes a structural model involving three key systems: sensory memory, short-term memory, and long-term memory.

Sensory Memory

The briefest element of memory that enables people to hold onto sensory information impressions even after the initial stimulus is no longer present.