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12 Cards in this Set
- Front
- Back
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Nose |
Smelling, tasting and breathing all start here.
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Mouth |
It is the starting point of the digestive system as well as a secondary inhaler and exhaler.L
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larynx. |
a passageway for air aka vice box
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Lung |
The lungs are the essential organs of respiration
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right bronchus
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Diaphragm
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This muscular structure acts as a floor to the chest (thoracic) cavity as well as a roof to the abdomen. It helps to expand and contract the lungs, forcing air into and out of them.
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pharynx
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The pharynx is shared with the digestive system from the tongue down to the epiglottis. Food goes on down the esophagus and air passes on through the trachea - but never both at the same time!
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trachea*
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This armored tube allows air to pass beyond the larynx |
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left bronchus
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The left one has a sharper bend due to the presence of the heart and major blood vessels directly underneath it.
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bronchiole
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Each bronchus divides and subdivides into smaller and smaller branches, the bronchioles, just like tree branches that get smaller as they grow up and out. By the time the air has reached here from outside, it has been warmed up to body temperature, filtered and moisturized.
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alveoli
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These tiny air cells, or sacs, are the 'leaves' of our respiratory tree. They resemble bunches of grapes and are the link between the respiratory and circulatory systems. Gas exchange happens here - I'll trade you fresh oxygen (O2) for your used carbon dioxide (CO2). Now trace the route of the old air back out to the nose.
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Throat*The throat includes all the structures lying in front of the spinal column including the mouth, tongue, pharynx, tonsils, larynx and trachea.
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Hbtvvgnj |
