Biological Concepts: Messages Quiz

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Questions and Answers

Kēkēhē ekwa nēhkēkv tv-cehē? (What is the nature of the message for electrical messages?)

Nerve impulse (correct)
Blood fluid
Hormonal signal
Chemical substance

Chemical messages are transmitted through neurons. (Chemical messages neuron-laki yvketi.)

False (B)

Electrical messages are known for their ___ speed of transmission.

extremely fast

Chemical messages have a ______ duration of effect.

<p>relatively long-lasting</p> Signup and view all the answers

Match the following types of messages with their characteristics:

<p>Electrical Message = Changes in cellular metabolism, Short-lived Chemical Message = Glandular secretions, Long-lasting</p> Signup and view all the answers

Flashcards

Electrical Message (Muskogee)

A nerve impulse traveling quickly along a neuron, affecting specific cells.

Chemical Message (Muskogee)

A chemical substance that travels slower, affecting many target cells across the body.

Neurotransmitter (Muskogee)

A chemical messenger that is not a hormone, though chemical.

Transmission speed (Electrical vs. Chemical) (Muskogee)

Electrical messages are very fast; chemical messages are much slower.

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Target Cell (Muskogee)

A cell that is affected by a nerve impulse or chemical message.

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Study Notes

Biological Concepts

Electrical Messages: These are nerve signals transmitted along neurons, carrying information from inside and outside the body to the central nervous system. This system then directs signals to organs for coordinated bodily function.

Chemical Messages

These messages include various chemicals that regulate the body's activities.

Comparing Electrical & Chemical Messages

Feature	Electrical Message	Chemical Message
Nature of Message	Nerve impulse	Chemical substance
Medium of Transmission	Neurons	Blood or lymph
Speed of Transmission	Very fast	Relatively slow
Target Area	Limited	Widespread
Target Cells	Specific cells (muscle, glands, and nerve cells)	All target cells with receptors
Effect	Muscle contractions	Gland secretions
Duration of Effect	Short-lived	Relatively long-lived
Result	Immediate changes	Metabolic changes in cells