Asked by Rose
describe how the heart demonstrates multiple levels of organization. explain an in beginner 7th grader's words and in 7 sentences.
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The heart is made of millions of tiny cells, mostly cardiac muscle cells, that can squeeze and relax.
Those cells join together to form tissues, like muscle tissue and connective tissue, that give the heart shape and strength.
Different tissues combine to make the heart as an organ, with chambers and valves that pump blood in the right direction.
The heart works with blood vessels to form the circulatory system, which carries blood throughout the body.
The circulatory system delivers oxygen and nutrients to other organs and removes waste like carbon dioxide.
All the organ systems together make up the whole human body, which depends on the heart to keep blood moving and keep us alive.
This shows how small parts (cells) build bigger parts (tissues, organs, systems) that work together to do important jobs.
Those cells join together to form tissues, like muscle tissue and connective tissue, that give the heart shape and strength.
Different tissues combine to make the heart as an organ, with chambers and valves that pump blood in the right direction.
The heart works with blood vessels to form the circulatory system, which carries blood throughout the body.
The circulatory system delivers oxygen and nutrients to other organs and removes waste like carbon dioxide.
All the organ systems together make up the whole human body, which depends on the heart to keep blood moving and keep us alive.
This shows how small parts (cells) build bigger parts (tissues, organs, systems) that work together to do important jobs.
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