How nerves send lightning messages
Inside the brain's command center
The body's automatic survival systems
The brain's incredible shape-shifting power
YOUR GOAL
Master of The body's electrical highway
artiteacher How nerves send lightning messages
Electric sparks fly, / Faster than a race car, / Flash to the brain!
artiteacher A protective layer of fat wraps around your nerves to keep electrical messages from leaking out.
artiteacher Signals zoom through your nerve fibers at speeds that rival the world's fastest high-speed trains.
artiteacher Tap the neural pathways to discover how electrical signals travel from brain to body.
Nerve length: If you lined up all the nerves in an adult body end-to-end, they would stretch about 45 miles long.
A momentary change in electrical potential associated with the passage of an impulse along a nerve cell. Alan Hodgkin and Andrew Huxley first recorded this electrical signal in 1939 using a giant squid axon.
Which scientist discovered chemical neurotransmitters in 1921 using frog hearts?
What is the maximum speed that nerve signals can travel through the human body?
What is the name of the protective, insulating layer that wraps around nerve fibers?
What would be the total length of an adult human's nerves if stretched end-to-end?