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body systems<br>7th grade science
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Fun Facts: Respiratory System ★ Lung airways, when laid-out, can cover 1,500 miles. ★ There are 300 to 600 alveoli in a lung. ★ An average person inhales and exhales air 23,040 times a day. About 300 cubic feet of air is transported by the lungs. While our normal breathing rate is 16 times per minute, during heavy exercise, a person may take 45 breaths per minute. ★ In 1983 and 1986, Thoracic surgeon Joel D. Cooper performed the first successful single and double-lung transplant. ★ Sneezing is a protective reflex mechanism of our body against irritants like dust, pollen, pepper and animal fur.
Which of these involuntary actions are related to the respiratory system? Are they related to any other body systems? IF so, which ones? Open CLASSLINKS and YouTube. Then click on this link for Ted Ed Video: Five Involuntary Things Explained
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