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10 Cards in this Set
- Front
- Back
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Compare/contrast
4 types of respiratory organs |
S (Skin)
G (Gills) T (Teacheae) L (lugs) |
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Define:
Hemoglobin |
Co in Co2 out
4 chains of polypepics contain an iron atom that makes blood red |
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Advantages of counter-current exchange
diffusion from? gradient? |
qVery, very effective
Remember: diffusion from high to low concentration Counter-current ensures gradient exists continually Exchange of gases can theoretically approach 100% |
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How many Americans die of smoking annually
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Kills 430,000 Americans annually
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annually
What smoking does to your lungs |
Overwhelms, then destroys lung defense systems
Emphysema = hardening of alveoli Eventually rupture, reducing lung capacity Causes heart to work harder all the time |
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Respiratory Surface
Must accommodate what?typically ? Always ? If they dry out what will happen? |
accommodate diffusion of CO2 out, O2 in
very thin moist or wet they cannot function |
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4 Types of Respiratory Organs
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4 Types of Respiratory Organs
Skin Gills Tracheae Lungs |
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Skin
For skin breathers, respiratory surface = covering Must live in must maintain ? Keep body Keep body Or |
respiratory surface = body covering
Must live in moist or wet places Must maintain high surface area to volume ratio Keep body small Keep body flat Or both |
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how is Gas Transport carried out? and how?
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Skin
Gases transported from skin to cells by blood or body fluids |
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Counter-Current Exchange Defined
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“Exchange” = transfer of energy or materials
“Counter-current” = two fluids moving in opposite directions Water one way Blood, the other way |
