Biology 3602A/B Lecture Notes - Lecture 8: Central Chemoreceptors, Surface Tension, Trachea

• School: Western University
• Department: Biology
• Course: Biology 3602A/B
• Professor: Jim Staples

Document Summary

Carp (related to goldfish): gill filaments doesn"t exchange too much gas, but branching off gill filaments are the lamellae. In normoxia, hard to see the lamellae, but if you acclimate them to 14 days of hypoxia, Sa goes up because you can now see the lamellae. They got rid of the cells in between the lamellae (ilcm) that was blocking the gas exchange surface of the lamellae. So they increase sa by getting rid of ilcm. Some pops are good at living at high altitudes, which depends on where you were raised also seen in animals. This is a graph showing alveolar sa of babies with mothers exposed to different altitudes. If mother was at high altitude, babies had higher sa in their alveoli. This is also true if you take the pups born at low altitudes and immediately transfer them to high altitudes; so as they grow they get bigger or more alveoli.