Term
|
Definition
- facilitate gas exchange
-deliver nutrients to lung tissue
-act as a reservoir to left ventricle
-fliter microemboli, air, and other debris from circulation |
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|
Term
| Gas exchange occurs only in... |
|
Definition
| ...alveoli and terminal portions of alveolar ducts |
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Term
|
Definition
| inflow and outflow of air |
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Term
|
Definition
| 02 and CO2 between alveoli and blood |
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Term
|
Definition
| of O2 and CO2 in the blood to and from cells |
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|
Term
| regulation of respiration takes place in |
|
Definition
| brainstem and chemoreceptors |
|
|
Term
| Diaphragm and rib cage movement with inspiration |
|
Definition
diaphragm contracts and moves downward
rib cage lifts and ribs separate |
|
|
Term
| atmospheric pressure and thoracic cavity pressure with inspiration |
|
Definition
| atmospheric pressure>thoracic cavity pressure |
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Term
| Inspiration is a ______ process |
|
Definition
|
|
Term
| Diaphragm movement with expiration |
|
Definition
|
|
Term
| atmospheric pressure and thoracic cavity pressure with expiration |
|
Definition
| atmospheric pressure< thoracic pressure |
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|
Term
| Expiration is a ______ process |
|
Definition
|
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Term
|
Definition
-reduces surface tension in the alveoli
-maintains inflation of lungs
-causes less effort needed to expand lungs |
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Term
|
Definition
| a measure of expansibility of lungs and thorax |
|
|
Term
| greater compliance means... |
|
Definition
| easier to change pressure to cause expansion of lungs and thorax |
|
|
Term
| conditions that decrease compliance |
|
Definition
-pulmonary fibrosis
-pulmonary edema
-asthma, lung cancer, and other airway obstructions
-deformities of thoracic wall like kyphosis |
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|
Term
| Oxygen-Hemoglobin Dissociation Curve |
|
Definition
| describes the % of Hbg saturated with O2 at any given pO2 |
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Term
|
Definition
|
|
Term
| Early and Late Manifestations of Hypoxia |
|
Definition
Early- restlessness, agitation, personality changes
Late- muscle incoordination, impaired judement, coma, cardiac arrest |
|
|
Term
|
Definition
-affects mucous membranes and skin
-think because of lack of oxygen |
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Term
|
Definition
| cyanosis from cold; slowing of blood flow |
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Term
|
Definition
| an increase in CO2 in the blood |
|
|
Term
| Contributing factors to hypercapnia |
|
Definition
•Alterations in CO2 production
•Disturbance in gas exchange function of the lung
•Abnormalities in chest wall and respiratory muscles
•Changes in the neural control of respiration |
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|
Term
| Hypercapnia is only observed when... |
|
Definition
| ...hypoventilation causes hypoxia |
|
|
Term
| Manifestations of hypercapnia |
|
Definition
-headache
-red eyes
-flushed skin
- disorientation to coma
-tachypnea, tachycardia |
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