Exchange Surfaces

Size:

Surface area to volume ratio:

Surface area to volume ratio:

Level of activity:

Features of a good exchange system:

Mammalian Gas Exchange System:

Gaseous exchange in the lungs:

Large surface area to provide more space for molecules to pass through:

The barrier to exchange is permeable to oxygen and carbon dioxide:

Thin barrier to reduce the diffusion distance:

A good blood supply:

Ventilation:

Inhaling and Exhaling:

Lung tissue:

The airways:

Airways are:

The trachea and bronchi:

The bronchioles:

Smooth muscle and elastic tissue:

Using a spirometer:

Precautious that must be taken when using a spirometer:

Lung volumes:

Lung Volumes

Oxygen uptake:

Breathing rate and oxygen uptake:

Oxygen Uptake:

Calculating oxygen uptake from a spirometer trace:

Bony fish:

Countercurrent flow:

Ventilation in bony fish:

Insects:

Ventilation in insects: