MDI Spacer Devices Are Used in Conjunction with MDIs To

question 8

Multiple Choice

MDI spacer devices are used in conjunction with MDIs to:

• A) serve as a baffle, removing smaller particles from suspension.
• B) enhance the effectiveness of aerosol deposition and improve medication delivery.
• C) act as a reservoir that helps to decrease the evaporation of the MDI propellant.
• D) a, b, and c.

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Definitions:

Action Potential

A rapid, temporary change in the electrical membrane potential of a neuron or muscle cell, allowing the transmission of signals.

Relatively Refractory Period

A phase following the absolute refractory period during which a neuron requires a stronger than normal stimulus to fire an action potential.

Absolutely Refractory Period

A phase following action potential in neurons during which no new action potential can be initiated, regardless of the strength of the incoming signal.

Tetraethylammonium (TEA)

Tetraethylammonium (TEA) is a chemical compound known to block potassium channels in cells, used in research to understand ion channel functions and in studying neural and muscular activity.