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3.1.1 Exchange surfaces - Coggle Diagram
3.1.1 Exchange surfaces
The need for a specialised exchange surface
Multicellular organisms
SA:vol
metabolic activity
Single-cellular organisms
SA:vol
metabolic activity
Features of an efficient exchange surface
SA
diffusion distance
blood supply
ventilation
Structure and function of the mammalian gas exchange system
cartilage
ciliated epithelium
goblet cells
smooth muscle
elastic fibres
Ventilation
Inhalation
Expiration
Normal (passive)
Forced
Measuring breathing
Bony fish
changes in buccal cavity volume
functions of the operculum, gill filaments and gill lamellae
countercurrent flow
Insects
spiracles
trachea
abdominal movement to change body volume
exchange with tracheal fluid
