A Useful Rule of Thumb Called the "Rule of 70

question 22

Multiple Choice

A useful rule of thumb called the "Rule of 70" states that if something grows at a constant rate of Z percent per year,it doubles in size approximately every __________ years.

• A) 70 - Z
• B) 70/Z
• C) Z/70
• D) 70 × (Z/100)

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Definitions:

Physiological Arousal

The physical state of being alert, involving physiological changes like increased heart rate and adrenaline.

Afferent Fibres

Afferent fibres are nerve fibers that carry sensory information from the body's periphery towards the central nervous system.

Sleep Spindles

Sudden surges of oscillatory brain activity observed during stage 2 of non-REM sleep, associated with learning and memory consolidation.

Stage 2 Sleep

A phase of sleep characterized by the presence of sleep spindles and K-complexes, indicating a deeper sleep than stage 1.