Ventilation in Bony Fish

Question 1

What is ventilation in Bony Fish?

Answer 1

1) lower jaw opens
2) volume of the buccal cavity increases
3) pressure of the buccal cavity decreases
4) oxygenated water moves into mouth and down the pressure gradient
5) lower jaw closes - volume of the buccal cavity decreases and pressure inside buccal cavity increases
6) oxygenated water flows over the gill filaments out of the operculum