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46 Cards in this Set
- Front
- Back
Both V and Q are greater in ____ regions of the lung
|
lower
|
|
the V/Q ratio is higher in ____ lung
|
upper
|
|
The
___ lung is more subject to collapse (atelectasis). |
lower
|
|
Why is there constant stress on the upper lung?
|
it never fully deflates
|
|
Compare the V/Q ratios in upper and lower lung
|
V/Q is higher in upper lung
|
|
pleural scarring secondary to TB is most
commonly seen in the ___ lobe. |
upper
|
|
Emphysema secondary to environmental exposure is most common in the
____ lobe. |
upper
|
|
Surgeons are well aware that the dependent lung is more efficient and have
advocated turning patients so the less diseased lung faces which direction? |
downward
|
|
Why more
aspiration to the right lower lobe? |
The right main stem bronchus is more vertical than the left.
|
|
There is a dual blood supply to the lung. What arteries?
|
(pulmonary and bronchial
arteries). |
|
Only 10% of pulmonary emboli result in infarcts. These tend to be in the
periphery, involve the ____, and are hemorrhagic. |
pleura
|
|
The respiratory system is divided 3 zones:
|
1. Conducting zone -Zone of air conduction, the site of dead volume.
2. Transition zone -Zone of both air conduction and gas exchange 3. Respiratory zone -Zone of gas exchange. |
|
The lung's lobules are demarcated by what?
|
fibrous
septae. |
|
where are the terminal bronchioles?
|
lobules
|
|
4 types of atelectasis
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Resorption: blockage(plug) of bronchial system,
with resultant isolation of lung segments and subsequent resorption of air and collapse. Compression: Passive collapse secondary to accumulated fluid in another area Contraction: Cicatrization-fibrotic change hampering expansion and increasing recoil. Microatelectasis: Nonobstructive, due to complex events, like loss of surfactant |
|
2 important types of cells in the Conducting Zone
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Secretory cells
Ciliated cells |
|
2 important types of cells in the respiratory zone
|
Alveolar epithelium
Inflammatory cells |
|
Type I and Type II of alveolar epithelium are called what?
|
Squamous pneumocyte
Granular pneumocvte |
|
-the surfactant
secreting alveolar epithelial cell. |
Granular pneumocvte or Tvpe II
|
|
Because of extensive surface, Squamous pneumocytes are very susceptible to inhaled
agents. What is the predominant cell type lining alveoli following injury ? |
Granular pneumocvte or Tvpe II
|
|
-The principal inflammatory cell type is the
_______ found in high numbers in the alveolar space. |
pulmonary macrophage
|
|
Tracheobronchial Clearance (Sedimentation) -removes medium-sized particles
(_____ um). The particles settle because of their weight. |
0.2-5
|
|
•Many aerosol drugs are deposited by _____
|
sedimentation
|
|
Nasal Clearance (Impaction) -removes most large particles (____ um).These
travel in a straight line and impact on the posterior wall of the nasopharynx. |
5-15
|
|
•Diffusion (Brownian movement) -is random movement by small particles
(_____um). |
0.1
|
|
the dominant alveolar cell type is the _____
|
pulmonary
macrophag |
|
Humoral immunity of the lung -Local immunity ______.
|
IgA
|
|
Inactivation of alpha-1-antitrypsin by oxidants (cigarette smoke
gaseous pollutants) does what in regards to elasticity? |
decreases elasticity
|
|
In the family of fibrous hydrated silicates which include chrysotile, amosite and
crocidolite, which is most carcinogenic? |
crocidolite
|
|
What type of exposure to asbestos (drinking water) does not appear to
be a health hazard? |
Oral
|
|
PROGRESSIVE ASBESTOSIS:
Pleural Effusion --> Pulmonary fibrosis AND Pulmonary plaques --> |
Pleural calcification
|
|
Asbestos associated pulmonary fibrosis= ______
|
Asbestosis
|
|
What exercise equipment does microscopic asbestos resemble?
|
Dumbells
|
|
Most prevalent chronic OLD in the world. The population at risk are stone workers,
sandblasters, etc. |
Silica Exposure
|
|
Much of the lung damage in the hard coal miners of VA, WV, etc. is probably due to the
________contained in the coal and not the carbon. |
silica (silicon dioxide)
|
|
The lesion of _____ is that of extensive pulmonary fibrosis and formation of fibrous
nodules containing abundant collagen and silica. |
silicosis
|
|
What disease?
acute respiratory reaction when exposed to cotton dust. AKA |
Cotton dust respiratory
Disease (Byssinosis) AKA |
|
What disease did Dr. Zaman's father die from?
|
Byssinosis in the setting of pulmonary edema caused by over treatment with morphine
|
|
Byssinosis may be induced by endotoxins coming from the
cell walls of gram-______ bacteria growing on cotten plants. |
negative
|
|
Concern over the health effects of small airborne particles is the result of
studies that showed excess mortality in urban areas was directly proportional to the amount of _____in the air. |
small particles
|
|
controversy over small particle/microparticles involves what factors?
|
i. There is no clear scientifically acceptable explanation for how small
particles increase mortality rates. ii. Most environmental measurements have been on particles 10-20 microns whereas the medically significant particles are smaller than 2.5 microns. iii. Particles themselves may have no effects. What may be important is the composition of the particles - e.g. acid content or heavy metal poisons. |
|
Farmer’s lung is caused by what?
|
Actinomyces
|
|
Farmer's lung is mediated by what immunological entities
|
IgG complexes and T lymphocytes
|
|
Bagassosis is caused by what?
|
Actinomyces, sugar cane, hemp
|
|
Hypersensitivity pneumonitis is the manifestation of what disease?
|
Baganossis
|
|
What is silofiller's lung mechanism?
|
NO2 heavier than O2
forms nitric acid Toxic gas, NO2 inhalation |