"Organs form when different types of tissue come together to perform a specific job for the body. If a cell is a brick, and a tissue is a house, an organ is like a city block."
A worksheet for the human body in the link...
"If we look into complex organisms such as humans ourselves and plants are organised into organ systems. In other words, each organ system is like a team of organs with a role of fulfilling a larger function. For instance, the human digestive system includes organs such as the tongue, stomach, etc. "
"The largest level of organization smaller than your whole body is an
organ system. Organ systems are groups of organs that work together to perform BIG jobs for your body. If an organ is like a city block, an organ system is like an entire neighborhood, like Back Bay."
A linked worksheet for learning the human body sytems.
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.