During the Rising (Depolarizing) Phase of a Neuronal Action Potential

question 18

Multiple Choice

During the rising (depolarizing) phase of a neuronal action potential,

• A) P_K+ becomes much greater than P_Na+.
• B) P_Na+ becomes much greater than P_K+.
• C) P_K+ is the same as P_Na+.
• D) Na⁺ efflux (flow out of the cell) occurs.
• E) K⁺ flows rapidly into the cell.

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Definitions:

Antilock Brake Systems

A safety system in vehicles that prevents the wheels from locking up during braking, allowing the driver to maintain steering control.

Permanent-Magnet Wheel Speed Sensor

A sensor that uses a permanent magnet to detect wheel speed, often used in anti-lock braking systems.

Analog

Pertaining to or using signals or information represented by a continuously variable physical quantity such as spatial position or voltage.

Digital

Pertaining to technology that encodes data as discrete numerical values, often represented as ones and zeros, for processing, storage, and transmission.