Respiration, Circulatory and Energy Systems

Once air in inhaled into the body it enters the ____________________ which is commonly known as the windpipe.

After passing through the bronchus, the air enters into smaller tubes called the ____________________

The ____________________ have a large, moist surface and walls that are only one cell thick.

__________ __________ is the process whereby oxygen is delivered to the bloodstream, while carbon dioxide in removed.

Gases move by ____________________ from an area of high concentration to an area of low concentration.

When air is inhaled, the ____________________ muscles contract to expand the ribcage

When air is exhaled, the ____________________ relaxes and moves up.

____________________ volume is a measure of air inhaled with each breath during normal breathing.

After a maximal outbreath there is a small amount of air left in the lungs to prevent them from collapsing. This measure is the ____________________ volume.

__________ __________ is the volume of air that you breathe per minute.