Gaseous Exchange in Human Beings

Which tube carries air to the wind pipe?

• Trachea

• Pharynx

• Larynx

• Adam's Apple

What are the small air sacs in the lungs where many capillaries exchange carbon dioxide for oxygen taken into the body.

• Alveoli

• Bronchi

• Bronchiole

• Nasal Cavity

Name the large muscle that separates the chest cavity from the abdominal cavity and helps with breathing?

• Larynx

• Diaphragm

• Sternum

• Thorax

The windpipe is also known as...

• Trachea

• Adenoid

• Pharynx

What happens to the air pressure between the pleural muscles, when you breathe in?

• No difference

• Increases

• Decreases

When you expire...

• ribs and sternum move up and out

• diaphragm moves down/ flattens

• External intercoastal muscles relax

• diaphragm contracts

• width of thorax increases

In what way are 'air sacs' placed around the lungs?

• closely

• clustered

• seperated

• non- existent

Where does the difussion of Carbon dioxide and oxygen take place?

• trachea

• diaphragm

• bronchi

• alveoli

What is the second step in human gaseous exchange

• air is inhaled

• oxygen is diffused into the blood

• suagr is made

• carbon dioxide is diffused

What is the third stage of Human gaseous exchange ?

• oxygen breathed in

• carbon dioxide diffused into the alveoli

• oxygen is diffused

• I don't know