Respiratory Phys 5 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
What is the organization of pulmonary circulation? | pulmonary artery, branch with airways, mesh of capillaries at the respiratory bronchioles, pulmonary venules, and pulmonary veins |
What is the flow and pressure of pulmonary circulation? | high flow, low pressure |
What happens to alveolar vessels when they are exposed to high alveolar pressure? | contract |
What happens to alveolar capillaries when the alveolar pressure is low? | the alveolar capillaries dilate |
What inspiration do to extra-alveolar vessels? | pulls them open by radial traction |
What is the only organ to receive all of the cardiac output? | lungs |
Why is there little smooth muscle in the lung? | only enough to direct blood to all areas of the lung. |
What determines blood flow in the lung? | passive hydrostatic forces |
What are the two types of vessels in the lung? | alveolar vessels (capillaries exposed to alveolar gases) and extra-alveolar vessels |
What determines the diameter of extra-alveolar vessels? | lung volume |
What determines the caliber of alveolar vessels? | balance between internal and alveolar pressures |
Which vessel can collapse if alveolar pressure is large enough? | pulmonary capillaries |
What is pulmonary vascular resistance compared to systemic vascular resistance? | pulmonary vascular resistance is 1/10th of the systemic vascular resistance |
What will happen to pulmonary vascular resistance if the arterial or venous pressure increases? | pulmonary vascular resistance decreases |
Why does pulmonary vascular resistance reduce? | recruitment and distension of other pulmonary capillaries |
When does pulmonary vascular resistance increase? | with low or high lung volumes |
Why does pulmonary vascular resistance increase at high lung volumes? | the high volumes put a lot pressure on the capillaries stretching them increasing resistance |
Why does pulmonary vascular resistance increase at low lung volumes? | the resistance is from the extra alveolar vessels because there is less radial traction to open up these vessels. |
Where is pulmonary blood flow grater? | lung base |
Where is the greatest distension of capillaries? | Zone 3 (base) |
Where are the vessels most compressed? | zone 1 (apex) |
What is hypoxic vasoconstriction? | blood flow in the lung is directed away from the hypoxic area of the lung. Usually is regional |
What happens in generalized hypoxia? | elevates pulmonary pressure by large areas of hypoxia which results in edema. |
Why is keeping the alveolar walls problematic in keeping them dry? | they are very thin |
What causes fluid leakage? | Hydrostatic pressure and the surface tension |
What causes fluid to stay in the capillaries? | colloid osmotic pressure and lymph drainage |
Where is fluid in early edema? | engorgement of interstitial spaces |
Where is fluid in late edema? | fluid in alveoli |
What are the metabolic functions of the pulmonary system? | conversion of angiotension I to Angiotension II, serotonin uptake and removal of Norepi, leukotrienes and prostaglandins |
Created by:
tjamrose
Popular Physiology sets