1) what are the four systems involved in nutrition? a) heart untera muscles b) digestive,excretory,circulatory and respiratory systems 2) where does digestion star? a) ln the mouth b) in de anus 3) what do the kidneys do? a) mouth b) they filter the blood and produce the urime 4) what is the pathway of air from the mouth/nose to the aleovi? a) mouth~trache~bronchi~bronchiole~aleovi b) contras~nose~ 5) ehat organ pumpus blood around the body ? a) trachea b) the lungs c) the veins d) The heart 6) which organ forms waste after absorbing water? a) large intestine b) small intestine 7) what organ stores urine ? a) the unteres b) the bladder 8) why do we breathe faster when we execise? a) because our muscles need more oxygen b) aleovi

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