1) The brain is part of the a) nervous system b) muscular system c) cardiovascular system 2) We use these to breathe... a) heart b) lungs c) muscles 3) This organ moves blood around our body. a) heart b) lungs c) muscles 4) We have over 600 of these in our body. a) muscles b) lungs c) bones 5) The biggest muscle in our body can be found in our... a) ear b) arm c) butt 6) Different parts of our brains control different things. a) True b) False 7) Our lungs are the same size. a) True b) False 8) There are 3 types of muscles. a) True b) False 9) The cells in our brain are called neurons. a) True b) False 10) A group of organs that work together are called a ____. a) team b) system c) goal

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