• Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front

### How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

Play button

Play button

Progress

1/23

Click to flip

### 23 Cards in this Set

• Front
• Back
 Air we breathe is a gaseous mixture consisting mainly of: mainly of N2 78.62% , O2 20.84% , w/traces CO2 0.04% , H2O 0.05% & helium & argon Atmospheric pressure @ sea level is about 760mmHg Partial pressure is the pressure exerted by each type of gas in a mixture of gases. The partial pressure of a gas is proportional to the contentration of that gas in a mixture. The total pressure excreted by the gaseous mixture is equal to the sum of the partial pressures. The partial pressure of Nitrogen 79% of 760 = 0.79 x 760 = 600mmHg The partial pressure of Oxygen is 21% of 760 = 0.21 x 760 = 160mmHg P= pressure PO2= partial pressure of O2 PCO2= partial pressure of carbon dioxide PAO2= Partial pressure of alveolar O2 PACO2= partial pressure of alveolar carbon dioxide PaO2= Partial pressure of artial O2 PaCO2= Partial pressure of artial carbon dioxide PVO2= Partial pressure of venous O2 PVCO2= Partial pressure of Venous Carbon Dioxide P50= partial pressure of O2 when the Hbg is 50% saturated ---- upper airway structures -NOSE (passageway for air to and from the lungs) WHICH CONTAINS: -SINUSES (common site of infection) -NASAL PASSAGES(catches dust & organisms in the inhaled air) -PHARYNX (Passageway for respiratory & digestive tract) -TONSILS & ADENOIDS(guards body from invasion organisms entering the nose & throat) -LARYNX(protects lower airway from foreign substances & facilitates coughing) -TRACHEA (passageway between larnyx & bronchi) lower respiratory tract Lungs INCLUDES: bronchial & alveolar structures needed for gas exchange Ventilation the flow of gas in and out of lungs inspiration normally requires ENERGY; when the capacity of the chest is increased, air enters through the trachea expiration normally is PASSIVE; when the capacity of the chest wall is decreased, the lungs recoil and force the air out through the bronchi and trachea visceral pleural covers the lungs parietal plueral lines the thorax pleural fluid lubricates the thorax and lungs & permits smooth motion of the lungs w/in the thoracic cavity w/ each breath. Lung (lobes) right(3 lobes) left (2 lobes) Lobar Bronchi (w/in each lobe) right-10 left-8 are the structures identified when choosing the most effective postural drainage position for a given patient. submucosal glands & cilia (surrounds the bronchi & bronchioles) the bronchioles contain submucosal glands, which produce mucus that covers the inside lining of the airways. Also lined w/ cells that have surfaces covered w/ cilia. cilia creates a whipping motion that propels mucus and foriegn matter away from the lungs towards the larnyx right mainstream bronchus more evenly aligned w/ the trachea, making it more common passage for aspirated contents dislocated endotracheal tubes terminal bronchioles(gas exchange airways) have a semi-permeable membrane and participate in gas exchange base lower area of lung apex top portion of lung