animal2-cardio - The stress of hypotension Cardiovascular...

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The stress of hypotension: Cardiovascular systems At the end of this lesson, you will be able to: P List the differences between closed and open circulatory systems P List the differences between fish, amphibian, avian and mammalians cirulatory systems P P Describe how the heart beats. P Describe regulation of blood pressure. Open vs closed systems P P All Chordates P High pressures P Small volumes P Most invertebrates P Low pressures P Large volumes P movements circulate blood
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P fluid: P 10% free-floating blood cells (hemocytes) for defence. P 90% water with dissolved inorganic salts ( Na + , Cl - , Mg 2+ , K + , Ca 2+ , HCO 3 - ) and organic compounds ( carbohydrates, lipids, proteins: O 2 -carrying [e.g. hemocyanin], . ) P composition is species-specific: Hemolymph in open systems e.g. hemolymph
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Blood (in closed systems) 98% ~2% vertebrate animals: blood
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Why have circulatory systems evolved? What functions do they serve?
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animal2-cardio - The stress of hypotension Cardiovascular...

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