Respiration; buccal and opercular pumps

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Phase 4: The buccal cavity expands while the opercular cavity is still being compressed. There is a slight reversed differential pressure between the two cavities, but this lasts for only a very short time.
The timing of the expansion and contraction of the buccal and opercular cavities ensures that the pressure in the buccal chamber exceeds that of the opercular chamber throughout nearly all of the respiratory cycle. This creates a nearly steady flow of water from the buccal chamber to the opercular chamber, passing over the gill lamellae, which have blood flowing through them in the opposite direction
Page 1 and 2: BIOLOGY OF FISHES FISH/BIOL 311 FUN
Page 3 and 4: The average human can utilize only
Page 5 and 6: Within the pattern, however, can be
Page 7 and 8: Diagrammatically, we can express th
Page 9: Phase 3: The Buccal Pressure Pump:
Page 13 and 14: With sensitive pressure transducers
Page 15 and 16: In other pelagic forms, the pumps m
Page 17 and 18: In truly benthic forms, especially
Page 19 and 20: 3. STRUCTURE AND FUNCTION OF GILLS
Page 21 and 22: In all bony fishes there are muscle
Page 23 and 24: Deoxygenated blood reaches the gill
Page 25 and 26: Three-dimensional cut-away view thr
Page 27 and 28: List of Air-breathing Fishes Arrang
Page 29 and 30: Lateral views of the gill arches of
Page 31 and 32: Gills are never used for air breath
Page 33: What is the biological significance

Respiration; buccal and opercular pumps

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