Term
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Definition
| Gas exchange between the surface of an organism and its environment. |
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Term
| Diffusion rate depends on: |
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Definition
- Differences in Partial Pressure
- Surface Area
- Thickness of Tissue
- Resistance of diffusion
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Term
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Definition
| Gas exchange between the environment in lungs and gills/skin |
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Term
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Definition
| Gas exchange between the blood and tissues in capillary beds. |
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Term
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Definition
| Breathing - active process of moving respiratory medium across the exchange surface. |
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Term
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Definition
| Pumping blood through an organ via capillaries. |
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Term
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Definition
Ventilation Rate = Perfusion Rate
Mammals |
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Term
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Definition
| Perfusion is too fast and blood leaves the respiratory surface before fully saturated. |
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Term
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Definition
Perfusion is too slow; inefficient: blood lingers too long in the respiratory surface.
Already saturated.
Fish (35:1) since there is a reduced amount of O2 in water. |
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Term
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Definition
Aquatic animals.
Internal or External.
Concurrent/cross-current exchange.
Structure = dense capillary beds.
V-shaped.
Blood is countercurrent b/t H2O and blood in 2' lamallae. |
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Term
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Definition
| Unidirectional flow of H2O - enters buccal cavity, passes over the gills, passes out the gill slits. Continuous. |
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Term
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Definition
| Protrude into surrounding H2O. |
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Term
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Definition
Aquatic
Actinopterygian Fish.
Physostomous vs. Physoclistus. |
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Term
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Definition
Directly connected to the digestive tract by a duct (pneumatic duct)
Fill the bladder by gulping air and force air into bladder via duct. |
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Term
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Definition
NOT connected to the digestive tract.
Filled by secretion of gas into the bladder, from the blood - blood enters bladder @ gas gland. |
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Term
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Definition
Elastic sacs lined with surfactant that decreases surface tension and allows the lungs to inflate when they inhale. (endoderm)
Terrestrial Animals
Usually paired.
Ventral to digestive tract.
Bidirectional/tidal flow.
Concurrent gas exchange/uniform pool.
Trachea->bronchi->bronchioles->alveoli |
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Term
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Definition
| Air in/out of the same channel. |
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Term
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Definition
Cutaneous Respiration.
Aquatic/terrestrial animals.
Capillary beds in dermis and epidermis.
amphibious animals.
Not found in birds.
Some mammals (bats = wing membrane).
Some reptiles
(In the hinge region b.t scales and around cloaca) |
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Term
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Definition
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Term
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Definition
1 is H2O breathing and 2 are used for air breathing.
- Dual Pump.
- Buccal (Pulse) Pump.
- Aspiration Pump.
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Term
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Definition
Water.
Fish (gills)
Pumps: Buccal and Opercular
Unidirectional Flow. |
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Term
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Definition
Air.
Air-breathing fish, amphibians (supp gills)
Bidirecitonal flow. |
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Term
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Definition
Air.
Mammals, Reptiles, Birds
Lungs within the pump.
Bidrecitonal Flow.
Pump = ribcage/diaphragm.
Decouples breathing and respiration. |
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Term
| Bicarbonate Buffer Equation |
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Definition
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Term
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Definition
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Term
| Amniotes elimination of CO2. |
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Definition
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Term
| Amphibians elimination of CO2. |
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Definition
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