A Therapist Tells a Patient Who Is Afraid of Elevators

question 7

Multiple Choice

A therapist tells a patient who is afraid of elevators that his rapid breathing while on an elevator is not due to fear but is a natural consequence of too little oxygen in a small,enclosed space.With this new interpretation of his arousal,the patient no longer dreads elevators.The reduction in the patient's fear is best understood in terms of

• A) the Cannon-Bard Theory.
• B) the two-factor theory.
• C) the James-Lange theory.
• D) sympathetic nervous system activity.

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Definitions:

Saltatory Conduction

Fast propagation of an action potential at successive nodes of Ranvier; saltatory means “leaping.”

Nodes Of Ranvier

Gaps in the myelin sheath around nerve fibers where the axon is exposed and action potentials are regenerated.

Sodium-Potassium Pumps

Membrane proteins that help maintain cellular homeostasis by actively transporting sodium out of cells and potassium into cells.

Multiple Sclerosis

An autoimmune disease that affects the brain and spinal cord, leading to demyelination, inflammation, and damage to nerve cells.