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Transcript
Respiratory System By Ben Duncan, Chelsea Sams, Marie McClary, and Shelby Wathen The respiratory system takes in oxygen and brings it into the lungs. Function of the Respiratory System Lungs Bronchi Bronchioles Trachea (windpipe) Larynx (voice box) Pharynx (throat) Nose Organs of the Respiratory System Your hairs in your nose help clean the air and warm it as well. The surface area of your lungs is approximately the same size of a tennis court. Some people can hold their breath for more than 20 minutes, such as free divers. Asthma was once treated with psychotherapy during the 1930s-1950s. The reason you yawn is because your brain tells your lungs that your oxygen is too low and that you need to take in large amounts of oxygen. FIVE AMAZING FACTS Nervous System Also by Ben Duncan, Chelsea Sams, Marie McClary, and Shelby Wathen The nervous system is the primary control system of the body. Function of the Nervous System Brain Spinal chord Nerves Sensory organs ◦ Eyes, ears, nose, tongue, skin Organs of the Nervous System There are more nerve cells in the human brain than stars in the Milky Way Galaxy. If you lined up all the neurons in your body, the length would equal 600 miles. There are 13.5 million neurons in the human spinal cord. As we get older, the brain loses about a gram per year. Electrical signals travel in nerve fibers at about 280 km/h or faster. FIVE AMAZING FACTS Some women can be born with 2 uteruses. There was a woman who gave birth to two healthy twins that developed separately in their own womb. Reproductive System Fact
