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Flashcards in Resp - Intro Deck (15):
1

fxns of resp

gas exchange
filter (thrombi/emboli)
metabolic (angI -> ang II, surfactant)
shock absorption
enhances venous return
alter blood pH
water/heat loss
blood reservoir
airflow (speech)

2

cartilage ring fxn

prevent collapse:
1. changes in P for in/expiration
2. sudden increases in P - sneeze, cough, poop, vomit

3

cartilage w/ which airways

rings: trachea, primary bronchi
plates: lobar and segmental (secondary and tertiary) bronchi
none: bronchioles

4

what keeps bronchioles open?

(no cartilage)
parenchyma and lung elasticity

5

what regulates bronchioles?

* circulating hormones and local chemicals
SM innervation (ANS)

6

conducting zone components

trachea + first 16 generations
bronchi, bronchioles, terminal bronchioles

7

respiratory zone components

last 7 generations
respiratory bronchioles, alveolar ducts, alveolar sacs

8

pores of kohn

connect adjacent alveoli

9

fxns of intrapleural fluid

lubricates pleural surfaces
causes surfaces to adhere together (when chest expands, lungs follow)

10

transmural p

P diff across wall

11

transpulmonary P

P diff from PA to Pip

12

Pip values (+/-)

(-) during quiet breathing
(more -) during deep inspiration
(+) during forced expiration

13

pneumothorax mech

air in pleural space --> Pip = Patm
lung collapses

14

pneumothorax sx

RR up
cyanosis
dyspnea
chest pain

15

tension pneumothorax mech

laceration of the lung
build up air in pleural space
push mediastinum to opposite hemithorax