Lecture 8: Distribution of Ventilation andLung Perfusion

Question 1

Gravity affect on upright animals

Answer 1

higher regions, more negative pleural pressure, trans pulmonary pressure is more negative, greater distending force on airway of apex
grater ventilation of basal regions

Question 2

Total cardiac output goes through?

Answer 2

The lungs

Question 3

Ratio of Ventilation to perfusion

Answer 3

estimate match between blood perfusion or a pulmonary capillary around an alvolus and ventilation of alevoulus

Question 4

High ration

Answer 4

good ventilation, poor perfusion

Question 5

Low Ration

Answer 5

good perfusion, poor ventialtion

Question 6

Functions of Pulmonary vasculature

Answer 6

1) enzyme rich: activates or deactivates things in blood
2) regulates blood enzymes
3) filters

Question 7

Bronchial circulation

Answer 7

2nd circulation of lung that is part of systemic circulation and provides oxygenated blood to the bronchi

Question 8

Physiological Dead space

Answer 8

alveolar regions of lung ventilated but dont have flood flowing though adjacent pulmonary capillaries

Question 9

Anatomical dead space

Answer 9

volume of conducting airway