II. Human cardiovascular physiology

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This week in 206
I. Physiology of the Crayfish
II. Human cardiovascular physiology
III. Circulation in the gold fish
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Animal respiration and circulation.
What is respiration?
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Animal respiration and circulation.
What is respiration?
Breathing.
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Circulatory system
Gills or lungs
Tissues Organs
O2
O2 Glucose
Outside
O2
CO2
Air or water
O2
CO2
O2
CO2
O2
CO2
CO2 H2O E
CO2
Membrane(s)
Membrane(s)
O2 21
CO2 lt1
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Circulatory systems
vs.
Open
Closed
Vertebrates human
Arthropods/crustacea
Crayfish
Blood pumped in pipes and Never touches
tissues-arteries/veins
Blood pumped out to tissues, dumped in sinuses
Trend is to separate oxygenated From
non-oxygenated blood
Tissues bathed Comes back to heart Through
sinuses and Reenters through ostia
Low pressure-low resistance High volume
High pressure-high resistance Low volume
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Respiratory systems
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Closed Vertebrate circulatory systems
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Human heart
2 systems- pulmonary and systemic.
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Structure of blood vessels
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Human respiratory system
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Angioplasty
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Coronary bypass
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Measuring Blood Pressure
Sphygmomanometer
Stethoscope
High pressure systolic, blood flow stopped
above this Low pressure diastolic, flow
unrestricted below this
120 mm Hg 80 mm Hg
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Crayfish respiration
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Dr. James L. Larimer UT-Austin professor 1959 -
2005 Zoology / Neurobiology
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Set O2 level and monitor
Bubble O2 or N2
Measure ventilation rate
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