science education resource
Go back to:

Alveoli, Alveoli ducts, Respiratory Bronchioles (Respiratory Zone)

To view these resources with no ads, please Login or Subscribe to help support our content development.

School subscriptions can access more than 175 downloadable unit bundles in our store for free (a value of $1,500).

District subscriptions provide huge group discounts for their schools. Email for a quote: sheri@exploringnature.org.

Alveoli, Alveoli ducts, Respiratory Bronchioles (Respiratory Zone)

Organs

The alveoli, alveoli ducts, respiratory bronchioles.

Function

True respiration begins in the smallest bronchioles (respiratory bronchioles). They branch into alveolar ducts and finally into the tiny alveoli. They look like tiny bunches of grapes. This is where gas exchange happens. The capillaries carrying oxygen lie right up against the alveoli and form the respiratory membrane. Across this membrane the oxygen is traded for carbon dioxide. Respiration has occurred.

To view these resources with no ads, please Login or Subscribe to help support our content development.

School subscriptions can access more than 175 downloadable unit bundles in our store for free (a value of $1,500).

District subscriptions provide huge group discounts for their schools. Email for a quote: sheri@exploringnature.org.

Use Teacher Login to show answer keys or other teacher-only items.

Exploringnature.org has more than 2,000 illustrated animals. Read about them, color them, label them, learn to draw them.