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IP6 S.Path Respir L3
Lung section of respiratoy system
| Question | Answer |
|---|---|
| Describe a normal lung? | Pink, spongy, collapse when open the thorax |
| What could cause a failure of the lungs to collapse? (5) | airway obstruction, fibrosis, edema, mineralization, pneumonia, neoplasia, pleuritis, emphysema |
| If the lung is red it would suggest? (3) | congestion, hyperemia, hemorrhage |
| If the lung is dark red to blue? (1) | collapsed lobules=atelectasis |
| lung is pale pink to white? (3) | anemia, fibrosis, emphysema |
| patchy or diffuse yellow brown lungs? | chronic passive congestion |
| what is the gray-yellow material that can sometimes be found on pleural surface? | fibrin |
| Texture changes: firm (2)? rubbery? gritty? | firm=pneumonia, neoplasia; rubbery=edema; gritty=mineralization |
| _______ _______ traps air in the lung b/c of the fibrous CT in the lumen of the bronciole | Bronchiolitis obliterans |
| bronchiolitis is often assd with what dz? | COPD chronic obstructive pulmonary dz |
| For efficient gas exchange you need what 2things? | 1.correct air:capillary blood ratio (ventilation/perfusion ratio) 2. blood must be close to air |
| If pulmonary tissue is not inflated ? | Atelectasis |
| If pulmonary tissue is over inflated? | Emphysema |
| condition where lungs fail to expand with air at time of birth. Results from 1. obstruction of airway or 2. quantity of surfactant | congenital atelectasis |
| which cells produce surfactant? | type 2 pneumocytes and clara cells |
| condition in which lungs collapse after inflation (due to obstruction or compressive force) | acquired atelectasis |
| What could cause compressive acquired atelectasis? (4) | abscess or neoplasm in pleural cavity, pressure from bloat, fluid in thorax, loss of negative pressure (pneumothroax) |
| reduction in diameter of aiways caused by edema, inflamm, or blockage of airway by mucus, exudate or foreign material | Obstructive (absorption) acquired atelectasis |
| When obstruction of is complete air is trapped and becomes _______. often has a ___ pattern due to blockage of aiway supplying lobule | reabsorbed, lobular pattern |
| Atelectic lungs are often depressed below surface of normally inflated lung and dark color. Distibution is _______(congenital) & ________(obstructive), diffuse if severe and compressive | congenital atelectasis=multifocal; obstructive atelectasis=lobular |
Created by:
rccola19
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