Hypoxia and Medicine

Medical Trivia? Eight-year-old B.J. has had asthma for 2 years since he had acute bronchitis. He is tested for allergies and demonstrated marked responses to a number of animals, pollens and molds. B.J. also has a history of asthma related to exposure to very cold weather. Please include references. Describe the pathophysiology of an acute asthma attack in B. J. following exposure to cats. Describe the early signs of an acute asthma attack and relate each of these to the changes taking place in the lungs. State and explain the effects of a prolonged asthma attack. Explain the factors contributing to severe hypoxia and acidosis in a prolonged attack. Define status asthmaticus. Explain why B. J. is likely to have frequent respiratory infections. Suggest several measures that B. J. can take to reduce anxiety and perhaps the risk of an asthma attack. Explain why a beta2-adrenergic agent is helpful in treating asthma and how it is usually administered.

PLEASE HELP....I have geology questions i need help with. Are you smart? JUST ANSWER WHAT YOU KNOW PLEASE TERMS Geologic time Geologic time scale Radiometric dating Uniformitarianism Absolute ages Relative ages Mass extinction Paleogeography Questions 1 Why is geologic time necessary for geologists? 2 On what information did geologists base the periods in the geologic time scale? 3 What is the difference between relative and absolute ages? Know some examples each. 4 What information is used to come up with relative ages? What information is used to assign radiometric ages? 5 Why is radiocarbon dating NOT used for most geology? 6 Approximately how old are the oldest rocks on Earth? 7 What is uniformitarianism? How is it used? TERMS Geologic History of Texas Basin Highlands Shelf Reef Limestone Oil Permian basin Pangea Halite Questions 8 Describe the processes that create oil and natural gas. 9 Why are ancient reefs often associated with deposits of oil and natural gas? 10 Who gets the royalties from oil and gas drilling in the Permian Basin in West Texas? 11 What is the name of the supercontinent that existed ~255 mya? 12 When was the Gulf of Mexico open from the west? 13 What mineral was deposited from the evaporation of seawater in the Gulf of Mexico? 14 Descripe the process that resulted in thick deposits of halite in the Gulf of Mexico and Texas. 15 What is the evidence for shallow seas that covered Texas about 100 mya? 16 What is a good modern analogy for the Permian Basin? 17 What tools do geologists use to find oil and gas deposits? TERMS End of the Dinosaurs Chixculub Meteorite Ash layer Yucatan Peninsula 18 What is some of the evidence that Chixculub was the meteorite that resulted in the extinction of the dinosaurs? 19 What is some of the evidence that Chixculub is a giant meteorite impact crater? 20 Where is Chixculub? 21 Why is iridium important in interpreting this part of the Earth’s history? 22 Can you see the Chixculub crater today? Why or why not? 23 When did the dinosaurs go extinct? This event is the boundary between what two time periods? TERMS Economic Resources in the GoM Salt domes Caprock Gas hydrates Sulfur Reefs (Flower Gardens) Questions 24 Describe the process that forms a salt dome 25 What resources are associated with salt domes? 26 What is a potential hazard to those living on top of or near salt domes? 27 What is a gas hydrate? 28 Why is it difficult to mine gas hydrates? 29 Who receives royalties from offshore drilling within Texas waters? TERMS The Passive Continental Margin Passive continental Margin Continental shelf Continental slope Continental rise Abyssal plain Deep-sea (abyssal) fan Submarine canyons 30 Be able to describe and diagram the parts of a passive continental margin. 31 What do most abyssal plains look like? 32 What defines the continental shelf? 33 How is sediment deposited on the continental rise? 34 What is an abyssal fan? What role do they play in the basin system? 35 Describe the tectonic setting of the Gulf of Mexico. TERMS Climate and environment Hypoxia/ Hyoxic Zone Gulf Stream Surface currents Thermohaline circulation Pollution Hurricanes Tornadoes 36 How does the hypoxic zone form? Why does it form near rivers? 37 Give an example of how humans can influence the locations and shapes of barrier islands. 38 What is the Gulf Stream? Where does it originate? Where does it end up? 39 How does the Gulf Stream affect the climate of the eastern USA and northern Europe? 40 What controls the surface ocean currents? 41 What role do currents play in controlling climate around the globe?