Let’s see how you did! If you didn’t get a few of these, don’t let it stress you out – it just means you need to play with more experiments in this area. We’re all works in progress, and we have our entire lifetime to puzzle together the mysteries of the universe!
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Answers:
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1. What is the job of the respiratory system? to provide the body with oxygen and remove carbon dioxide
2. What happens to air in the nasal cavity? air is warmed and moistened
3. What does the diaphragm do when you inhale? contracts to make more room in the chest
4. Why is it important for the epiglottis to cover the trachea when you are eating? this prevents food from going down the trachea
5. What happens in the alveoli? oxygen travels from the alveoli to the blood and carbon dioxide travels from the blood to the alveoli
6. When pressure is different, in what direction do fluids flow? from high to low pressure
7. How does your body use differences in pressure when you exhale? the pressure inside the body increases, becoming greater than the pressure outside, causing air to flow out
8. What is the difference between breathing and respiration? breathing is the act of air coming in and out of the body; respiration includes all gas transfer
9. What is internal respiration? the transfer of oxygen from the blood to the various parts of the body
10. What disease results from an inflammation on the bronchi? bronchitis
11. What types of things can cause an asthma attack? change of temperature, physical activity, poor air quality
12. What types of things cause pneumonia? bacteria, viruses, fungi, and parasites
13. Why are the lungs part of both the respiratory and excretory system? they are involved gas exchange as well as removing a waste product (carbon dioxide)
14. Besides the excretory system, what system are the kidneys a part of? urinary
15. What do the kidneys do? filter urine
16. What is urine? a mixture of water and nitrogen-containing compounds, including urea
17. After traveling down the ureters, where does urine go? to the bladder
18. How do kidney stones develop? nitrogen-containing compounds crystallize in the urinary system
19. What is the purpose of a kidney dialysis machine? to act as the kidneys by filtering blood, if the kidneys have shut down
20. What are the most common types of UTI? bladder infections
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