An Action Potential Is Generated When

question 211

Multiple Choice

An action potential is generated when

• A) the sodium-potassium pump turns on.
• B) the threshold of excitation is reached.
• C) potassium flows into the cell.
• D) the cell becomes hyperpolarized.

---

Definitions:

Sleep Spindles

Brief bursts of brain activity characterized by rapid oscillations, seen in the stage 2 of non-REM sleep, thought to be involved in memory consolidation.

Delta Waves

Slow brain waves observed in deep sleep, associated with restoration and healing in the human brain.

Rapid Brain Waves

Fast-frequency brainwave patterns observed in the brain's electrical activity, typically associated with alertness, attention, and cognitive processing.

Circadian Rhythms

Physical, mental, and behavioral changes that follow a 24-hour cycle, primarily responding to light and darkness in an organism's environment.