A Strong Stimulus Is Experienced as More Intense Than a Weak

question 14

Multiple Choice

A strong stimulus is experienced as more intense than a weak stimulus because a strong stimulus triggers

• A) a speedier action potential.
• B) a higher-voltage action potential.
• C) more neurons to fire,and to fire more often.
• D) the release of epinephrine.

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Definitions:

Isotonic Saline

A solution of sodium chloride (salt) in water at a concentration that matches the salt concentration of the body cells and blood, commonly used for medical hydration and wound cleaning.

Extracellular Fluid

The body fluid outside cells, providing a medium for substances to pass between cells and blood vessels.

Resting Membrane Potential

The electrical charge difference across the cellular membrane when a neuron or muscle cell is at rest, typically around -70 mV.

Afterpotential

The electrical changes that occur in a neuron immediately following an action potential, which can affect the neuron's ability to fire again.