A Movement of the Resting Membrane Potential from -70 MV

question 48

Multiple Choice

A movement of the resting membrane potential from -70 mV to -90 mV would be termed a(n) :

• A)Hyperpolarization
• B)Depolarization
• C)Action potential
• D)Threshold depolarization

---

Definitions:

Pyroclastic Flow

A fast-moving cloud of hot volcanic gases, ash, pumice, and rock fragments that generally travel down the flanks of a volcano; synonym: ash flow.

Volcanic Dome

A round-shaped mound formed over a volcanic vent by the slow eruption of viscous lava.

Mount St. Helens

An active stratovolcano located in the state of Washington, USA, known for its catastrophic eruption in 1980.

Extremely Hot

A condition or temperature significantly higher than average or expected, often associated with environments close to volcanic activity or during heatwaves.