Download Unit 8 vocabulary

Unit 8: The Structure of Living Things
Vocabulary
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Organism- any living thing
Organ- is a body part that is made up of smaller parts that work together to do a certain job
Organ system- a group of organs that work together to do one type of job
Brain- is the organ that processes information for the entire body and its systems
Skin- the human body’s largest organ, which covers the outside of the body
Bones- a hard organ that has a spongy layer inside and that may help support the body or protect other
organs
7. Muscles- an organ made of bundles of long fibers that can contract to produce movement in living things
8. Exoskeleton- a hard outer covering found in many different animals that helps support and protect the
body
9. Lungs- the largest organs in the respiratory system that bring oxygen from the air into the body and
release carbon dioxide
10. Heart- a muscular organ that pumps blood through the rest of the circulatory system
11. Stomach- a baglike organ in which food is mixed with digestive juices and squeezed by muscles
12. Liver- a large organ that makes a digestive juice called bile
13. Pancreas- an organ that makes a digestive juice and insulin
14. Kidneys- organs in the human excretory system that removes waste materials from the blood
15. Bladder- an organ in the excretory system that stores and release urine