Respiratory System Flashcards Preview

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Flashcards in Respiratory System Deck (20):
1

Functions

1. air passageway: conducts air into body or out
2. site of gas exchange
3. detection of odors: contains olfactory epithilium
4. production of sound: sound created as air moves past vocal folds

2

upper respiratory tract

nose, nasal cavity, pharynx

3

Lower respiratory tract

larynx, trachea, bronchi, bronchioles, alveolar ducts, alveoli

4

Conducting zone

passageway serves for conduction air, nose to terminal bronchioles

5

respiratory zone

structures participate in gas exchange, respiratory bronchioles, alveolar ducts alveoli

6

mucosal lining

mucus, goblet cells, ciliated epithelium, basement membrane, lamina propria

7

Epithilium changes

smaller as it moves down.

8

Larynx cartilage

Thyroid, cricoid carilage, cuneiform, corniculate (horns), arytenoid

9

Alveoli

type 1 cells: SSE cells make up wall, Type II cells, produce surfactant (increase surface area keeping alveoli inflated.)
Alveolar macrophages: resident phagocytes

10

Respiratory membraneL surface across which gas exchange occurs

SSE of alveoli SSE of capillary and shared membrane

11

Respiratory physiology

as V decreases, pressure increases. move from areas of high to low pressure.

12

pressures in lungs

intrapleural pressure: pressure i pleural cavity.
atmospheric pressure: all gases in atmosphere
Intrapulmonary pressure: changes throughout pulmonary ventilation

13

Pulmonary ventilation

inspiration: change in volume and change in pressure, air rushes in
expiration: decrease in volume, change in pressure, air rushes out.

14

Alveolar gas exchange

O2 moves from high in alveoli to low in blood and CO2 moves from big in blood to low in alveoli

15

systemic gas exchange

CO2 moves from high in tissue to low in capillaries, O2 moves from high in blood to low in tissues.

16

O2 transport

2% free in blood
98% on heme of hemoglobin in RBC

17

CO2

70% transported in blood as carbonic acid
20-25% transported on globin on hemoglobin
5-10% free in blood

18

Ventral repiratory group

sets pace for normal breathing

19

Dorsal respiratory group

alter reparation based on needs from body on the VRG (in response to tissue demands)

20

Pontine respiratory group

alter shift from inspiratio to expiration, influencing VRG, DRG