B3.1 IBDP Bio: Gas Exchange

Front

When you breathe, your lungs take in ___ and remove ___. Options: air/oxygen, oxygen/carbon dioxide, carbon dioxide/waste, waste/air

Back

oxygen/carbon dioxide

Front

What is the function of the bronchi?

Back

Transport air from trachea to lungs

Front

The two main branches from the trachea (one to each lung)

Back

bronchi

Front

The air sacs that are covered with capillaries where gas exchange takes place

Back

alveoli

Front

Within the lungs, the exchange of oxygen and carbon dioxide occurs between the ___ and the capillaries.

Back

alveoli

Front

Name the structure labelled #6: alveoli, bronchi, trachea, lungs

Back

trachea

Front

Name the structure labelled #8

Back

diaphragm

Front

The fatty substance that lines the inner surface of the alveoli and prevents alveoli from collapsing.

Back

surfactant

Front

What happens when the diaphragm relaxes?

Back

A decrease in chest volume.

Front

Order of air flow during inhalation: 1. larynx 2. nasal cavity 3. pharynx 4. trachea

Back

2,3,1,4