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Ch 44
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Ventalation
Inhale/exhale
Oxygen content
Air is 21%
Partial pressure
%O2*760mm Hg
Ficks law
Rate of diffussion= k(constant)* A( area of gas exchange) * (P2-P1/ D (thickness of barrier)
Aquatic animals have no repitory organs
small enough surface are for diffussion
Counter current flow
GIlls
Maximizes O2 diffussion
Trachae
system of tubules that bring oxygen to the body
Trachae
muscles need to move to breath
Posotive pressure breathing
swallowing air
frog breathing
Diaphram contract
flat
inhale
Diaphram expand
Sharp dome
exhale
Lungs are covered in a thing layer of...
water
Molecule that makes lungs contract
H+
Surfractin
breaks hydrogen bongs around lungs
Tidal volume
amount inhaled/exhaled at rest
aprox 1/2 liters
Vital capacity
maximum volume to be inhaled/exhaled
Femal is leass than male (3800,4800)
Residual volume
amount in lungs that cannot be forced out of lungs
WInd knocked out of you
diaphram cannot contract properly
Reptiles
have no diaphram
cannot move an breath
Gastralium (alligator)
attatched to the diaphramtic muscles that pulls the rib cage away from the lungs expandin the thorasic cavity
Parabronchi (bird)
equililant of alveoli
one way flow
don't need to exhale
lipid escort
keep fats from attatching to vascular wall
Immunogloblin
mark biological invaders
Buffers
moniter ph levels
Erythrocytes
helogloblin
no nuclei
no mitochondrian
Leucocytes (white blood cells)
Found in lymph nodes
Platelets
cause clotting
Hem
1 iron molecule
Hemoglobin
4 sub units
each bind with 1 O2 unit
Plasma contains____
Minute oxygen (<1%)
Bonding of Hemoglobin
more receptive to O2
Cooperative binding
more=more
less=less
Hemoglobin releases O2
more likely to loose O2
CO2+H2O=H2CO3=H+ +HCO3-
Increase of H+ ions
Ph goes down
Lowe ph causes
release of more O2 from hemeoglobin
CO2 Transport
7% plasma
23% hemoglobin
70% Bicarbonate (HCO3-)
Carbonic Anhydrase
catalyst to bicarbonate
Chlorine
Antiporter to Bicarbonate
Open Circulatory system
Hemolyph (blood subsitute)
Ex
: Clams
Very low pressure
Blood goes through heart twice
more sophisticated animals
mygenic
can cause contraction withou stimulus
SA
Sino Atria node
AV
atrio Venticular node
Pressure low in
Veins
Pressure high in
Capilaries
Baroceptors
pressure sensing nerve calls
locate in haert and major arteries
Speed of blood slow in
capilaries
Author
anime1003
ID
70501
Card Set
Ch 44
Description
Biology II
Updated
2011-03-04T05:12:05Z
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