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

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Images from Purves et al., Life The Science of
Biology, 4th Edition
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1) jellyfish breathe through their skin, why
cant we??
Oahu, Hawaii photo by J Hodin
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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).
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3) long distance runners often train at high
altitudes. This gives them greater capacity to
gain oxygen during exercise. How?
Catherine Ndereba womens Boston Marathon
champion 2000, 2001, 2004
http//kenyapage.net/sports/kenya-track.html
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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 its similar to high altitude
training but without all the hard work) (hint 2
its undetectable)
PhysioRoom.com
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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
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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
theyre 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
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types of movement
passive ameboid cilia/flagella muscular
contraction (incl. jet propulsion, hydrostatic
pressure, spring, hydraulic pressure...) chemica
l 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