Which organ in the human body can regenerate itself even after significant damage?
Liver
Heart
Kidney
Lung
What is the name of the phenomenon where humans have a "phantom limb" sensation after losing a limb?
Somatosensory illusion
Phantom limb syndrome
Neural misfire
Synesthesia
How many senses do humans actually have beyond the classic five (sight, hearing, taste, touch, smell)?
2
3
5
More than 5
Which part of the human body contains the fastest-growing cells?
Hair
Fingernails
Stomach lining
Skin
Which organ in the human body has its own independent nervous system?
Heart
Brain
Stomach
Lungs
What is unusual about the cornea in the human eye?
It can heal itself completely
It has no blood supply
It grows continuously
It contains nerve endings but no pain receptors
Humans are the only species known to do what uniquely with their thumbs?
Opposable thumb usage for writing
Make fist gestures
Grasp food
Move thumbs independently
Which human body part can continue functioning even after brain death?
Lungs
Heart
Liver
Skin
How much saliva does an average human produce in a day?
0.5 liters
1 liter
1.5 liters
2 liters
Which phenomenon causes some humans to experience sudden chills while thinking or listening to music?
Dopamine rush
Frisson
Synesthesia
Emotional dysregulation
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