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NU 327 Pathophysiology Exam 3 Study Guide with Verified Solutions $12.49   Add to cart

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NU 327 Pathophysiology Exam 3 Study Guide with Verified Solutions

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NU 327 Pathophysiology Exam 3 Study Guide with Verified Solutions Ventilation - Answer-Moving air into and throughout the lungs to the capillaries Perfusion - Answer-how much blood to the area Diffusion - Answer-Movement of gas from an area of high concentration to an area of low concentration...

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  • October 16, 2024
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NU 327 Pathophysiology Exam 3 Study
Guide with Verified Solutions

Ventilation - Answer✔✔-Moving air into and throughout the lungs to the capillaries


Perfusion - Answer✔✔-how much blood to the area


Diffusion - Answer✔✔-Movement of gas from an area of high concentration to an area of low

concentration




Oxygen diffuses out of alveoli into blood




Carbon dioxide diffusion out of blood into alveoli


Cilia - Answer✔✔-Line the trachea and bronchi


Defense against "invaders"


Cough reflex


Impaired function


impaired cilia - Answer✔✔-Smoking


Increased mucous production

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ETOH


Temperature changes


Low humidity


Type 1 alveoli cell - Answer✔✔-gas exchange


Type 2 alveoli cell - Answer✔✔-surfactant


Right lung - Answer✔✔-Upper lobe


Middle lobe


Lower lobe


Left lung - Answer✔✔-upper lobe


lower lobe


Bronchial artery system - Answer✔✔-Supplies oxygenated blood to lungs and pleura


Neural control of breathing - Answer✔✔-Medulla oblongota


Pons


Referred to as the "respiratory center" of the brain


Stretch receptors - Answer✔✔-Prevents overstretch


Neonates


Proprioceptors - Answer✔✔-sense exercise, increase respiratory rate


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,EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024


Chemoreceptors - Answer✔✔-increase in PCO2 and a decrease in pH


Baroreceptors - Answer✔✔-sense changes in pressure


Factors effecting perfusion - Answer✔✔-Fluid volume within lung


Fluid shifts


Interstitial edema


Alveolar edema


Pulmonary Capillary network - Answer✔✔-"Low pressure" system


Normal pressure 22/8 to 25/8 mm Hg


Can expand to 2-3 times its normal size


25% pulmonary capillaries perfused at rest


Pulmonary Blood Flow Zone 1 - Answer✔✔-minimal perfusion


Pulmonary Blood Flow Zone 2 - Answer✔✔-intermittent perfusion


Pulmonary Blood Flow Zone 3 - Answer✔✔-continual perfusion


Ventilation/perfusion ratios - Answer✔✔-Adequate volume of air matched with an adequate

blood flow




Normal:


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Ventilation (VA) 4 L/min alveolar air flow


Perfusion (Q) 5 L/min capillary blood flow




Normal VA/Q ratio = 0.8


High Va/Q - Answer✔✔-increased Va, Normal Q


***pulmonary embolus


Low Va/Q - Answer✔✔-Getting blood but not breathing


airway constriction


responsive to O2


**Asthma/Pneumonia


Shunt Va/Q - Answer✔✔-no ventilation


not responsive to O2


due to alveolar collapse


**Acute respiratory failure


Methods of oxygen transport - Answer✔✔-Dissolved in Plasma (PaO2)


Bound to Hemoglobin (SaO2)


PaO2 - Answer✔✔-partial pressure of oxygen in arterial blood


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