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1. Which of these is a common description of the brain? It is the C. control capital of the body A. main organ of the body D. most important body organ B. control center of the body 2. What protects the brain? A. hip bone B. rib cage C. skull D. spinal column 3. Which part of the brain enables Mario to swim using his arms and legs? A. brain stem C. cerebrum B. cerebellum D. medulla oblongata 4. What is ine inaiu funcion of the heari? A. filtering and cleaning of blood B. pumping and circulating of blood C. collecting and excreting of wastes D. sending and interpreting information 5. Which of the following made up the heart? A. blood streams C. red blood cells B. muscle tissues D. white blood cells 6. What is the function of the atria? Where the blood 3. exits C. filters D. stays system B. digestive C. nervous D. respirat A. enters 7. What organ system is the liver part of? A. circulatory 8. What does the liver digest and store? A. bile B. fats C. nutrients D. protein 9. Which part of tholungs contains sacs called alvorli, whers the exchange of gases happens? A. bronchi B. bronchioles C. lobes D. pleura 10. Which of the following is eliminated (removed) during the breathing proce A. body wastes C. air with oxygen B. carbon dioxide D. blood without oxygen
C. skull-The brain and the spinal cord are protected by bone: the brain by the bones of the skull, and the spinal cord by a set of ring-shaped bones called vertebrae. They're both cushioned by layers of membranes called meninges and a special fluid called cerebrospinal fluid.
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