Circulation and gas exchange II (Chapter 42)
Keywords
Fish Gill
Rather than being a solid structure, the fish gill is finely subdivided to enhance gas exchange area
PPT Slide
filaments
Lamellae
Countercurrent flow
NOT countercurrent
Countercurrent
Are gills effective in increasing surface area?
How do gill surface areas compare among different fishes?
Tracheal systems in insects
Tracheoles supply tissues
Diffusion distance from tracheole to mitochondria is short
Lungs
Structure of the mammalian lung
Tidal ventilation of mammalian lung
Tidal ventilation
Birds have a more ìsophisticatedî type of lung ventilation
The avian respiratory system
The control of breathing
Organismal respiration -- a simple view
Why does the body sense carbon dioxide rather than oxygen?
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