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The Human Nervous System The Brain And Nerves

2 imagenes, 8 preguntas, 1 definicion, 1 dato, 1 encuesta sobre The Human Nervous System The Brain And Nerves en ARTi.

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The body's electrical highway

Imágenes

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The fatty armor keeping signals strong

teacher A protective layer of fat wraps around your nerves to keep electrical messages from leaking out.

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Speeding faster than a racecar

teacher Signals zoom through your nerve fibers at speeds that rival the world's fastest high-speed trains.

Fun Facts

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Fun Fact

Nerve length: If you lined up all the nerves in an adult body end-to-end, they would stretch about 45 miles long.

Quizzes

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Quiz

Which scientist discovered chemical neurotransmitters in 1921 using frog hearts?

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Quiz

What is the maximum speed that nerve signals can travel through the human body?

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Quiz

What is the name of the protective, insulating layer that wraps around nerve fibers?

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Quiz

Approximately how many neurons are found in a healthy human brain?

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Quiz

Which German scientist coined the term "neuron" in 1891?

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Quiz

What would be the total length of an adult human's nerves if stretched end-to-end?

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Quiz

What is the main function of neurotransmitters in the human nervous system?

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Quiz

How wide is the average synaptic gap between two communicating neurons?

Glosario

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Glossary

action potential (noun)
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.

Gossip

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Gossip

If you could test your reflexes, which challenge sounds most exciting?