Resp: Pulm Mech and Ventilation

Question 1

what does boyles law tell us

Question 2

“changes in lung volumes drive pressure gradients and air flow” - explain what this statement means

Question 3

when does the diapragm move down

Question 4

when does the diaphragm move up

Question 5

when is atmospheric pressure greater than alveolar pressure? why

Question 6

when is alveolar pressure greater than atmospheric pressure and why

Question 7

during inspiration are muscles active or inactive

Question 8

describe whats happening to the ext intercostals, diaphragm, sternum, and ribs during inspiration

Question 9

describe what happens to internal intercostals during expiration

Question 10

when are expiratory muscles inactive? when are they active?

Question 11

what is the role of pleural fluid

Question 12

why do you want the pleural pressure to be -3mmhg

Question 13

what happens to pleural fluid during pneumothorax

Question 14

how would wet dressing help a pneumothorax

Question 15

describe the changes in alveolar pressure during quiet breathing

Question 16

describe the changes in interpleural pressure during quiet breathing

Question 17

describe the changes in the volume of air moved during quiet breathing

Question 18

what is lung compliance

Question 19

what is lung compliance influenced by

Question 20

contrast elasticity vs compliance

Question 21

how do elastin fibers influence compliance

Question 22

what happens to lung elasticity with age

Question 23

what is distending pressure

Question 24

how does the lung compliance curve change with emphysema. why

Question 25

how does the lung compliance curve change with fibrosis. why

Question 26

what does surface tension do to the alveolus wrt pressure and volume

Question 27

what does surfactant do in the alveoli

Question 28

what does surface tension do to elasticity in the alveoli. why?

Question 29

what is the law of laplace

Question 30

what type of airflow occurs in the lungs

Question 31

what type of airflow occurs in the alveoli

Question 32

what type of airflow occurs at bifurcations

Question 33

what causes changes in resistance in the airway

Question 34

when would bronchoconstriction occur

Question 35

when would bronchodilation occur

Question 36

what happens to the difference in intraalveolar pressures during insp and exp with increased vs normal resistance

Question 37

what is total pulmonary ventiliation

Question 38

what is alveolar ventilation / fresh air

Question 39

describe the process of dead space, stale air, refilling