Brain trivia

8 brain trivia questions, from easy to hard. Tap a question to see the answer. They're real questions from Rubicon, where you type the answer yourself and an AI judge reads what you meant.

This set covers Hearing & Balance, Neurological Disorders, Neuroscience & Senses, Reflexes & the Autonomic System, Sleep, Smell & Taste, The Brain & How It Works and The Spinal Cord & Nerves.

Questions and answers

  1. Easy Why does swallowing help relieve popping in your ears during an airplane flight?

    Swallowing opens a small passage between the throat and middle ear, allowing internal and external pressure to balance.

  2. Easy What does the letter F stand for in the stroke awareness acronym FAST?

    The letter F stands for face, reminding people to check whether one side is drooping.

  3. Easy What is a primary reason we forget most dreams shortly after waking?

    The brain shifts from dream-generating activity to waking consciousness, making dream recall difficult.

  4. Medium What structural difference allows fast pain fibers to outpace the fibers that carry lingering dull aches?

    Fast A-delta pain fibers are insulated with myelin, which speeds up electrical signaling along the nerve.

  5. Medium Which medical term describes the complete loss of smell commonly experienced during a COVID-19 infection?

    Anosmia is the medical term for the complete loss of a person's sense of smell.

  6. Medium Why do people often recall emotionally charged events in far greater detail than ordinary daily routines?

    Stress hormones released during strong emotions enhance memory consolidation in the brain.

  7. Hard Why does the brain's waste removal system operate far more efficiently when a person is asleep rather than awake?

    Brain cells shrink during sleep, expanding the interstitial space to let cerebrospinal fluid flush away metabolic waste products.

  8. Hard Why does the lower end of the adult spinal canal contain a spray of dangling nerve roots rather than solid cord?

    The bony spine grows much faster and longer during childhood than the spinal cord, pulling lower nerve roots downward to reach their exits.

Now try it yourself

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