Breathing air out of lungs

Known as the wind pipe

The _____ divides into two main sections or branches from the Trachea.

Which respiratory structure is lined up with rings of cartilage to prevent is from collapsing?

Which of the two lungs is smaller, having only 2 lobes instead of 3, to make room for the heart?

_____ are the site where Oxygen and Carbon Dioxide exchange inside the lungs.

The muscle that contracts and relaxes to force air in or out of the lungs.

Gas exchange involves higher concentrations of _______________ from the alveoli going into the blood to return to the heart and higher concentrations of ____________________ from the blood crossing the cellular membrane into the lungs to be exhaled.

Check each that is classified as an upper respiratory infection

What is letter F pointing to?

What is letter D pointing to?

What is letter B pointing at?

Choose the correct order that air flows through the body.

Check all boxes of conditions classified as a chronic obstructive pulmonary disease.

The nasal cavity

By what process do our alveoli and capillaries exchange oxygen and carbon dioxide?

The common cold and influenza are respiratory infections caused by which of the following pathogens?

Which system works together with the circulatory system to provide body cells with oxygen?

The normal range for adult respirations is

Which part of the blood carries oxygen?