Respiratory System

Gas exchange is the main function of the . . .

• digestive system

• circulatory system

• excretory system

• respiratory system

Which organ is made of millions of alveoli, which when stretched and laid out would cover an entire tennis court?

• trachea

• bronchus

• pharynx

• lung

Name structure 9 in the diagram.

• pharynx

• trachea

• bronchus

• air sac

The ________, which is also known as the windpipe, splits into two bronchi.

Select all the functions of the respiratory system.

• brings air into and out of the lungs

• excretes a gaseous waste product

• diffusion and exchange of gases

• circulates oxygenated blood (blood rich in oxygen)

Evaluate the video presentation that was prepared by your classmates.

• I do NOT like it.

• I like it.

• I like it very much

The __________ is a respiratory muscle that contracts to promote inhalation (breathing in).

Which lung is bigger?

• right lung

• left lung