# data[].attributes.body
Bronchi are the main passageway into the lungs. When someone takes a breath through his nose or mouth, the air travels into the larynx. The next step is through the trachea, which carries the air to the left and right bronchus.

# data[].attributes.body
The trachea is lined with ciliated, mucus-producing cells which help in trapping any debris which have gotten past the filters located in the nasal passage. The cilia sweeps this debris up from the trachea and back to the pharynx.  The trachea wall is surrounded by rings of cartilage which aid in keeping the windpipe open.  The epiglottis is a structure that covers the glottis (opening of the windpipe) when food is being swallowed in order to prevent any food from entering the trachea. When food is pushed to the back of your mouth it initiates a response that causes the epiglottis to cover the windpipe.

# data[].attributes.body
The main function of the bronchioles, is to allow the passage of air freely, into the lungs. Besides allowing air to pass, the bronchiole also prevents infections. They are located at the end of the bronchi, the larger, branching airway passages in the lungs, and terminate in the alveoli, tiny circular sacs where oxygen is exhanged with carbon dioxide in the blood.

These passageways are distinguished from the bronchi in that they do not contain cartilage or glands. They are responsible for controlling air distribution and airflow resistance in the lungs.

# data[].attributes.body
The Diaphragm is a muscular separation between chest cavity and abdomen. When it contracts and relaxes it pushes air in and out of the lungs.

# data[].attributes.body
The throat; a common pathway for both air and food. Begins posterior to the nasal & oral cavities, and extends inferiorly larynx and esophagus. The walls are lined by mucus and contain skeletal muscles that are primarily used for swallowing.

# data[].attributes.body
1. Diaphragm contracts and lowers

2. Chest cavity enlarges and the pressure around the lungs is reduced.

3. Air enters the lungs to equalize the pressure

4. The diaphragm relaxes and moves back up

5. The lungs and chest wall have elasticity so this pushes the air out of the lungs.

# data[].attributes.body
Commonly called the voice box, is an organ in the neck in front of the esophagus and protects the trachea from water and food partials that may slip past the pharynx,

It also contains the voice folds which are mandatory for speech.

# data[].attributes.body
Trace the pathway of air as it enters the nose to gas exchange at the tissue. Use images and provide definitions for Nasal passage, pharynx, larynx, trachea, bronchi, bronchioles, alveoli, capillaries, diaphragm.