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Chapter 42

BIOL 150 Chapter Notes - Chapter 42: Partial Pressure, Exhalation, White Blood Cell


Department
Biology
Course Code
BIOL 150
Professor
Jeffrey Carmichael
Chapter
42

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Gas Exchange and circulation
Gas Exchange
ventilation circulation Respiration
Ei
Ceci
what is in the air we breath
Nitrogen 78
Oxygen 2190
Argon 09370
Partial pressure of oxygen falls
with increasing elevation
53mmHg
9000 250
95mm
Hg
6000 1350
ugg
500
7oo
What determines now fast gas
exchange takes place

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cha ge c
Fickis Law of Diffusion
1Large surface area
2Thin respiratory surface
3High pressure gradient
Gas Exchange Organs
Grills countercurrent exchange
insect tracheae openings to tubes
entire body carry oxygen
Lungs respond to changes in pressure
alveoli
How do we breathe
Diaphragm contracts which creates
pressure pulling the lung open
O
c9
br
inhalation exhalation
General types of circulatory stystem
1Closed
2open
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