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15 Cards in this Set
- Front
- Back
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What is cellular ventillation ?
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~Flow of air into and out of the lungs
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What are the 5 basic functions of the respiratory system ? (hint, Acronym:AAAIF)
Or Aaasif ! |
1.Air distribution and GAS exchange.
2.Filters, warms, and humidifies the air during breathing. 3. Influences speech ( production of sound) 4.Assists in Homeostasis of the body's PH. 5. Assists in olfaction( sense of smell) |
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~ What are the 2 functional areas of the respiratory system ?
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1. Upper respiratory system:
~ Nose, Pharynx, Larynx 2. Lower respiratory system: ~Trachea, Bronchi, Lungs |
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Which structures comprise the conducting ZONE of the Respiratory System ?
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The conducting Zone is a series of interconnecting cavities and tubes ; nose, pharynx, larynx, trachea, bronchi, bronchioles, and terminal bronchioles which CONDUCT THE AIR INTO THE LUNGS.
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WHAT IS THE DIVIDING POINT BETWEEN THE UPPER RESPIRATORY AND THE LOWER RESPIRATORY SYSTEM ?
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~ The Larynx divides the upper from the lower respiratory system.
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What is the difference betw. the conductive vs. Respiratory Anatomy ?
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~ Conductive anatomy is all the tubes and the cavities that do NOT participate in Gas exchange.
~ Respiratory anatomy starts with the Bronchioles. |
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What is surfactant and where is it seen ?
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Surfactant is a mixture of phospholipids and lipoproteins that function in the reduction of and tendency of alveoli to collapse.
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The exchange of O2 and co2 occurs in the _______ ?
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~ co2 and o2 are exchanged between the air spaces in the lungs and the blood takes place by diffusion across the ALVEOLAR and cappillary walls.Which TOGETHER FORM THE RESPIRATORY MEMBRANE.
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The Respiratory Membrane consists of the following layers:
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1~ the alveolar cell that forms the Wall of the alveolas.
~ An epithelial basement membrane underlying the alveolas. ~ A capillary basement membrane that is fused to the epithelial basement membrane. ~ The endothelial cells of the capillary. ~ cO2 and o2 must pass thru here. |
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What are the three physical properties of the lungs ?
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1~ Compliance
2~ Elasticity 3~ Surface tension |
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Compliance is reduced by waht ?
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~factors that produce
RESISTANCE to distention. |
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What is compliance ?
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~ compliance is the ease w/ which the lungs can be expanded or VOLUME CHANGE WITHIN A LUNG PER CHANGE IN PRESSURE.
~ REDUCED BY FACTORS THAT PRODUCE A RESISTANCE TO DISTENSION, SUCH AS ELASTICITY AND SUFACE TENSION |
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What is surface tension ?
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~ Surface tension is the molecular force created @ the gas-LIQUID INTERFACE due to fact that molecules of a liquid are more strongly attracted to each other vs. the gas.
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What are the effects of surface tension ?
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~ suface tension is important in the walls of the
Alveoli where surface tension PULLS THE WALLS INWARD DURING snap-back of EXPIRATION ~ aLSO IMPORTANT IN THE PLEURAL CAVITY WHERE SURFACE TENSION CREATED BY PLEURAL FLUID SECURES THE VISCERAL AND PARIETAL PLEURA TOGETHER (DURING BREATHING) |
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What is elasticity ?
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~ elasticity is the ability to recoil after stretch
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