lubricated
The air sac must have thin walls so that air passes easily through it.
Hyper inflation of air sacs with destruction of alveolar walls.
because the walls are thin
Emphysema or Pulmonay emphysema
simple squamous epithelium
Simple squamous epithelium.
The bronchi continue to divide into smaller and smaller branches until they end in air sacs. The air sacs in the lungs are called alveoli.
air sacs
Labryinth fish have air sacs and can gulp air.
The color of your air sacs are a peach color.
air sacs are in the lungs and when you breathe in blood carries it to the lungs.
Oxygen moves into the capillaries from the air sacs. Carbon dioxide moves out the the capillaries into the air sacs.