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Take the test: Underlying Biological Structures and Functions
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Question 1 of 5
1. Question
A hollow muscular organ that pumps blood throughout the blood vessels to various parts of the body by repeated, rhythmic contractions is the?
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IncorrectThe correct answer should be: Heart
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Question 2 of 5
2. Question
An organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals is?
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IncorrectThe correct answer should be: The Brain
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Question 3 of 5
3. Question
The _____ is the most complex organ in a vertebrate’s body.
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IncorrectThe correct answer should be: brain
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Question 4 of 5
4. Question
_________ are usually considered the most important cells in the brain.
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IncorrectThe correct answer should be: Neurons
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Question 5 of 5
5. Question
The ______ is the essential respiration organ in many air-breathing animals.
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IncorrectThe correct answer should be: lung