Final answer:
An organ is a structure with different tissues working together. Examples include the heart and lungs. The liver, spleen, and bone marrow are types of storage organs.
Explanation:
An organ is a structure that consists of two or more types of tissues that work together to do the same job. Examples include the heart, brain, and lungs.
In the human body, three types of storage organs are the liver (primary storage site), spleen, and bone marrow.
Human organs are organized into organ systems. An organ system is a group of organs that work together to carry out a complex function.
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