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Unit 3 Lesson 5

Cells & Body Systems - Parts of a Multicellular Organism

TermDefinition
bronchi tubes that carry air into the lungs
carbon dioxide a gas exhaled from the body
diaphragm a layer of muscle and connective tissue that separates the chest from the abdomen and pulls air into the lungs with it contracts
invertebrate an animal that does not have a spinal column; not having a vertebrae
multicellular an organism that is made of more than one cell
organ a collection of tissues that work together to perform a specific function or set of functions
organ system a group of organs, each with different functions but a similar collective purpose
respiratory system the organ system that exchanges gases between an organism's internal and external environments
tissue cells with the same function connected together into structures
trachea the air tube connecting the mouth the lungs
model a representation of something based on data and observations that is used by scientists to help predict the behavior of complex systems, especially those that are too small or large to work with directly
Created by: PRao
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