Exchange And Transport In Fish Flashcards
1
Q
Define Counter Current Exchange
A
Blood and water flow opposite to each other in the gills
Equilibrium is not reached
Establishing oxygen concentration diffusion gradient
Across entire length of lamellae
2
Q
Where is the site of gas exchange in fish
A
Gill lamellae
3
Q
What are the adaptations for gas exchange in fish ?
A
Large SA:Vol ratio, lots of gill lamellae covering gill filaments
Short diffusion distance -> thin walls of lamellae and capillary networks present
Concentration Gradient - Counter Current flow
