This process involves muscular movements of diaphragm and the rib cage. 

It provides an entrance for air in which air is filtered by CILIA inside the nostrils.

It has 2 portions: the external and internal

The external portion is supported by a framework of bone and cartilage covered with skin and lined with mucous membrane

Interior area of the nose; which filters incoming air, removing dust and particles; warms and humidifies the air before it reaches the lungs.

is the common passageway for air and food and it provides a resonating chamber for speech sound

uppermost portion of the pharynx

middle portion of the pharynx

lowermost portion of the pharynx

It houses the vocal chords and the different muscles used in producing sounds. 

voicebox

It is the tubular passageway for air into the lungs. 

It is lined with ciliated cells to push particles out, and cartilage rings to guard it against pressure when breathing.

Windpipe

Two branching tubes that connect the trachea to the lungs.

are equipped with tiny, hair-like structures called cilia. Cilia help move mucus out of your lungs, keeping the ______ clean and healthy.

The finer subdivisions of the bronchi.

They are the hairlike tubes that connect to the alveoli.

Are tiny air sacs found at the ends of each of the bronchioles

are 2 or more alveoli that share a common opening

This is where the primary exchange of gases occurs.

The two organs that extract oxygen from the inhaled air and expel carbon dioxide into the exhaled air

are composed of the bronchi, bronchioles, alveoli, and their supporting tissue.

This is the main and primary organ of the respiratory system

the intake if air into the lungs through expansion of chest volume

the expulsion of air from the lungs through contraction of chest volume