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Images from Purves et al., Life: The Science of Biology , 4th Edition

Images from Purves et al., Life: The Science of Biology , 4th Edition 1) jellyfish breathe through their skin, why can’t we?? Oahu, Hawai’i photo by J Hodin 2) oxygen passes from the digestive to the circulatory system

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Images from Purves et al., Life: The Science of Biology , 4th Edition

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  1. Images from Purves et al., Life: The Science of Biology, 4th Edition

  2. 1) jellyfish breathe through their skin, why can’t we?? Oahu, Hawai’i photo by J Hodin

  3. 2) oxygen passes from the digestive to the circulatory system at the alveoli (sacs at the ends of bronchiole passages in the lungs). Why, for example, does oxygen not just pass into the circulatory system in the mouth or the throat? Those cells have blood supplies nearby too! from: K. Schmidt-Nielsen Animal Physiology (1997).

  4. 3) long distance runners often train at high altitudes. This gives them greater capacity to gain oxygen during exercise. How? Catherine Ndereba women’s Boston Marathon champion 2000, 2001, 2004 http://kenyapage.net/sports/kenya-track.html

  5. 4) “blood doping” is an illegal method that some long distance runners have used to increase their oxygen carrying capacity. How does it work? (hint #1: it’s similar to high altitude training but without all the hard work) (hint #2: it’s undetectable) PhysioRoom.com

  6. 5) breathing is a muscular process involving the diaphragm. When the diaphragm contracts, air is forced into the lungs. How? from Purves et al., Life: The Science of Biology, 4th Edition

  7. BAD NEWS ABOUT SMOKING-RELATED ILLNESSES: 1 out of 5 deaths in the US are related to smoking 30% of all cancer deaths are attributable to smoking 87% of lung cancer deaths are caused by smoking, and lung cancer is the leading cause of cancer deaths in men & women GOOD NEWS ABOUT SMOKING RELATED ILLNESSES: they’re preventable!! nicotine is one of the most addictive substances known (equivalent to heroin and coke, according to the Royal College of Physicians, London BUT.... source: American Cancer Society

  8. types of movement http://192.107.108.56/portfolios/b/bess_n/bessthesisproject/pictureglossary.htm passive ameboid cilia/flagella muscular contraction (incl. jet propulsion, hydrostatic pressure, spring, hydraulic pressure...) chemical explosion! buoyancy which types of movements are used by humans or their cells? yes!! (e.g. red blood cells) yes!!(e.g. macrophages: a type of immune [white blood] cell) yes!! (e.g. sperm, air passages...) yes!! no no body size is important in determining which type a given organism uses

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