Lec 2 - 5 - Lung Volumes / PFT Flashcards Preview

Dental Physiology > Lec 2 - 5 - Lung Volumes / PFT > Flashcards

Flashcards in Lec 2 - 5 - Lung Volumes / PFT Deck (19):
1

inspiration is an active process at all lung volumes except blank

functional residual capacity

2

stretched muscles have blank force

less

3

shortened muscles have blank force

more

4

weak muscles cause a blank frc because recoil is greater than chest wall force

decreased

5

driving force of the pressure across the respiratory system

alveolar pressure - barometric pressure... Pa - Pb

6

primary determinants of lung volume

sex, age, height

7

residual volume formula

= (IC + functional residual capacity) - vital capacity

8

with an airway obstruction, the functional residual capacity will blank

increase

9

obstructive diseases like emphysema have blank muscle strength, blank lung compliance, and blank airway resistance due to smooth muscle constriction and mucus plugging airways

decreased, increased, increased

10

emphysema causes blank residual volume and functional residual capacity and total lung capacity

increased

11

emphysema causes blank vital capacity and forced expiratory volume

decreased

12

compliance formula

delta V / delta P

13

flow in large airways

turbulent

14

flow in small airways

laminar flow

15

resistance formula

delta P / V

16

usually, the blank and blank flow rates are equal to each other

inspiratory, expiratory

17

inspiratory flow resistance is effort blank, but expiratory flow resistance is effort blank

dependent, independent

18

expiratory and inspiratory flow are effort blank

dependent

19

premature airway collapse to alveoli if the airway resistance is very blank and will result in crackles and rales

high

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