Moving Air In & Out of the Lungs Flashcards Preview

Apex 1 - 2 Respiratory II: Physiology (24) > Moving Air In & Out of the Lungs > Flashcards

Flashcards in Moving Air In & Out of the Lungs Deck (60)
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1

Anatomic dead space begins in the mouth and ends in the:

Study on!!!!

2

The airway serves as a conduit to transfer gas between

the -------- and the --------.

 

Atmosphere

Blood

3

The conducting zone is known as:

Anatomic dead space

4

True or False:

The conducting zone is anatomic dead space and does not participate in gas exchange

True

5

Structures in the conducting zone include:

Nares - Mouth - Trachea - Mainstem bronchi - Lobar bronchi - Small bronchi - Bronchioles  - Terminal bronchioles

6

What are the last structures perfused by the bronchial circulation?

Terminal bronchioles

7

The zone where gas exchange takes place is known as:

Respiratory zone

8

Gas exchange begins in the:

Respiratory bronchioles

9

Gas exchange can only occur across the ----- epithelium

Flat epithelium

10

The portion of the airway that serves the dual function of serving as an air conduit and an area where some gas exchange takes place is known as:

Transitional zone

11

Some texts refer to the transitional zone as the portion of the airway that serves the dual function of serving as an air conduit and an area where some gas exchange takes place. Which specific areas would be considered part of the transitional zone?

 

Respiratory bronchioles

Alveolar ducts

12

The process that creates cyclic pressure changes inside the thorax is known as:

Breathing

13

Breathing is a process that creates cyclic pressure changes inside the thorax. This mechanism exchanges ----- gas in the upper airway with ----- gas in the distal airway

Fresh gas in the upper airway with

Alveolar gas in the distal airway

14

What are the two critical functions of Breathing?

 

O2 is delivery to hemoglobin.

CO2 is elimination from the blood

15

For air movement (and gas exchange) to occur, the airways must remain:

Patent

16

For air movement (and gas exchange) to occur, the airways must remain patent. The pressure inside the airway must be ----- than the pressure outside of the airway

"greater"

17

The pressure inside the lungs minus the pressure outside of the lungs is known as:

Transpulmonary pulmonary pressure

18

By convention, the pressure inside the lungs is called

Alveolar pressure

19

The pressure outside of the lungs is called

Intrapleural pressure

20

What the equation for Transpulmonary pressure?

TPP = Alveolar pressure – Intra-pleural pressure

21

During tidal breathing, Transpulmonary pressure (TPP) is always -----.

 

 

Positive

22

During tidal breathing, Transpulmonary pressure (TPP) is always positive. This keeps the airway -----.

"open"

23

During tidal breathing, intra-pleural pressure is always -----.

Negative

24

During tidal breathing, intra-pleural pressure is always negative. This keeps the lungs ----.

"inflated"

25

During tidal breathing, Alveolar pressure becomes slightly ----- during inspiration

 

 

Negative

 

 

26

During tidal breathing, Alveolar pressure becomes slightly Negative during inspiration and slightly ----- during expiration

Positive

27

True or False

There is no airflow at FRC

True

28

True or False

There is no airflow at End-inspiration

True

29

Aside from pathologic states, such as pneumothorax, the only time that intrapleural pressure becomes positive is during:

Forced expiration

30

Calculate Trans-Pulmonary Pressure (TPP) at FRC

At FRC: 0 - (-5) = +5