Term
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Definition
| relative contribution of an individual gas to a mixture of gases in air or liquid |
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Term
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Definition
| occurs down partial pressure gradients |
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Term
| single-celled organism respiration |
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Definition
| simple diffusion across membrane |
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Term
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Definition
| gas exchange across epidermis |
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Term
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Definition
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Term
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Definition
| create negative pressure in buccal cavity to draw in water, which forces it out the gills |
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Term
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Definition
| suck air into buccal cavity, raise floor of buccal cavity, and force air into lungs |
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Term
| positive pressure breathing |
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Definition
| occurs in amphibians, air is forced into lungs |
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Term
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Definition
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Term
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Definition
| site of gas exchange between air and blood in birds - do not expand or contract |
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Term
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Definition
| unidirectional air flow and no mixing of fresh and stale air |
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Term
| negative pressure inhalation |
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Definition
| negative pressure created in lungs to draw air in |
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Term
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Definition
| relaxation of inspiratory muscles |
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Term
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Definition
| additional muscles contract |
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Term
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Definition
| lungs expand and pressure drops |
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Term
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Definition
| oxygen diffuses out of air into blood & carbon dioxide diffuses out of blood into alveoli |
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Term
| gas exchange in peripheral tissues |
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Definition
| oxygen diffuses out of blood and into tissues & carbon dioxide diffuses out of tissue and into blood |
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Term
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Definition
| protein with 4 iron-containing subunits |
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Term
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Definition
| binds to hemoglobin in lungs and unloads from hemoglobin at peripheral tissues |
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Term
| states of carbon dioxide in body |
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Definition
| ~10% dissolved in plasma, ~20% bound to hemoglobin, and ~70% as bicarbonate |
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Term
| carbon dioxide elimination |
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Definition
| diffuses out of blood into air and is "blown off" |
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Term
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Definition
| too little carbon dioxide in blood |
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Term
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Definition
| too much carbon dioxide in blood |
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Term
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Definition
| COPD that can cause acidosis |
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Term
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Definition
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