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II. Human cardiovascular physiology
I. Physiology of the Crayfish
III. Circulation in the gold fish
This week in 206
Animal respiration and circulation.
What is respiration?
Animal respiration and circulation.
Glucose + O2 CO2 + H2O + E
What is respiration?
Breathing.
Air orwater
Gills orlungs
O2
CO2
Circulatorysystem
TissuesOrgans
O2
O2
CO2
CO2
O2 + Glucose
CO2 + H2O + E
Outside
O2 CO2
Membrane(s) Membrane(s)
O2 CO2
O2 21%CO2 <1%
Open vs. Closed
Arthropods/crustaceaCrayfish
Blood pumped out totissues, dumped in sinuses
Tissues ~bathedComes back to heartThrough sinuses and Reenters through ostia
Low pressure-low resistanceHigh volume
Circulatory systems
Vertebrates human
Blood pumped in pipes andNever touches tissues-arteries/veins
Trend is to separate oxygenatedFrom non-oxygenated blood
High pressure-high resistanceLow volume
Respiratory systems
Open circulatory system
Heart Sinuses Heart
arteries ostia
Ophthalmic- eyes
Antennal- antennae, antennules, green glands
Hepatic- digestive gland
ArteriesOstia
Closed
Vertebrate circulatory systems
Human heart
2 systems- pulmonary and systemic.
Structure of blood vessels
Human respiratory system
Angioplasty
Coronary bypass
Measuring Blood Pressure
Stethoscope
Sphygmomanometer
High pressure = systolic, blood flow stopped above thisLow pressure = diastolic, flow unrestricted below this
120 mm Hg 80 mm Hg
Crayfish respiration
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Dr. James L. LarimerUT-Austin professor 1959 - 2005Zoology / Neurobiology
Bubble O2 or N2Set O2 level andmonitor
Measure ventilation rate