The Respiratory System

The life function of the respiratory system is:

• Reproduction of offspring

• Exchanging gases between the body and external environment

• Digestion of food into nutrients

• Sending messages between the cells of the body

Air is a mixture of gases. The gases that our respiratory system exchanges are:

• Nitrogen and oxygen

• Carbon dioxide and Nitrogen

• Oxygen and Carbon dioxide

• None of these

What are the main organs of gas exchange in the respiratory system?

• diapragm
• lungs
• trachea
• bronchi

The role of the mucus and and cilia in the respiratory system is to....

• warm the air.

• clean the air of particles and pathogens

• humidify the air.

• All of the choices are true.

Air travels from your mouth and nose to the pharynx, the larynx and then the windpipe. The windpipe is also known as your:

• esophogus

• bronchi

• trachea

• alveoli

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

• bronchi
• alveoli
• capillaries
• bronchioles

Name the structure labeled 8 

• lungs 
• trachea 
• diaphragm 
• alveoli 

As the diaphragm moves upwards you ________________ and as the diaphragm moves downwards you _________.

• Exhale, Inhale

• Inhale, Exhale

When you breathe, your lungs take in ___ and remove ___.

• air/oxygen

• oxygen/carbon dioxide

• carbon dioxide/ oxygen

• waste/air

The air sacs where gas exchange takes place are also called ______________.

• bronchi

• lungs

• oxygen

• alveoli