Respiratory System Flashcards Preview

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Flashcards in Respiratory System Deck (23):
1

Which cranial nerve stimulates the diaphragm?

phrenic

2

rhythm generating and integrative center for respiration

ventral respiratory group in medulla oblongata

3

controlling breathing at rest is aimed primarily at

H+ concentration in the brain

4

low co2 levels in blood

hypocapnia

5

hering-breuer reflex

keeps lungs from overfilling

6

increased ventilation due to metabolic needs

hyperpnea

7

Types of COPD

chronic bronchitis
asthma
TB
emphysema - breakdown of alveoli
lung cancer

8

Frequent consequences of COPD

hypoventilation
hypoxemia
respiratory acidosis
coughing/ recurring infections
dyspnea

9

Emphysema

breakdown of alveoli, reduces surface area
severe shortness of breath, can't take in enough air to blow out a match
chronic debilitation, body starves for oxygen, heart disease
scar tissue deep within respiratory system
barrel chest

10

lung cancer

also related to cancer of lip, larynx, lungs
caused by repeated inhalation of irritating substances
90% of patients are smokers
most die 1 year within diagnosis(7% survive 5 years)

11

intrapulmonary pressure

pressure in alveoli

12

intrapleural pressure

pressure in pleural cavity, outside lungs, always negative to intrapulmonary
keeps alveoli inflated

13

transpulmonary pressure

pressure difference between Ppul and Pip (Ppul-Pip), the larger the difference, the larger the lungs

14

what do you call it when a lung collapses?

atelectasis or pneumothorax

15

normal, quiet breathing, about 500ml

tidal volume

16

Inspiratory reserve volume

the amount that can be inspired beyond tidal volume

17

Expiratory reserve volume

the amount of air that can be forcibly expelled after normal tidal volume

18

the amount of air that remains in lungs even after forcible expiration

residual volume

19

the respiratory capacities...

always consist of two or more lung volumes

20

Inspiratory capacity

the amount of air that can be inspired, even after normal tidal volume
TV+IRV

21

Amount of air in lungs after normal tidal volume expiration

ERV+residual volume

22

Vital capacity

total volume of exchangeable air
Tidal volume+expiratory reserve volume+inspiratory reserve volume

23

total lung capacity

total of all lung volumes
residual volume +tidal volume+ expiratory reserve+inspiratory reserve