Lung Volumes

Question 1

What is the pressure of water vapor in the lungs at 37 degrees

Answer 1

47 mm Hg

Question 2

What is atmospheric pressure

Answer 2

760 mm Hg

Question 3

What is Boyle’s law

Answer 3

P1V1 =P2V2

Question 4

What type of pressure causes the lungs to expand

Answer 4

Interpleural pressure

Question 5

Pleural pressure is ______-

Answer 5

Negative

Question 6

What is the pressure that pulls the lungs towards the chest

Answer 6

Interpleural pressure

Question 7

What is the equation for trans airway pressure

Answer 7

Pta = Paw - Pl

Question 8

What is the equation for the trans pulmonary pressure

Answer 8

Pl=PA - Ppl

Question 9

What pressures determine whether the lungs will collapse or not

Answer 9

Transairway pressure and transplmmonary pressure

Question 10

What pressures determine the flow of air

Answer 10

Airway pressure and alveolar pressure

Question 11

A high pleural pressure leads to

Answer 11

Low transpulmonary pressure ->expiration

Question 12

What is the transpulmonary pressure at rest

Answer 12

5 cm H2O

Question 13

Will you have more of a negative pressure at the apex or at the base

Answer 13

Apex

Question 14

During forced (mid-expiration, which of the following can have a negative value

Answer 14

Trans-airway pressure

Question 15

Alveolar pressure is ______ in inspiration and ________ in expiration

Answer 15

Negative; positive

Question 16

Intrapleural pressure remains _______ in inspiration and expiration

Answer 16

Negative

Question 17

To treat TB it is better to ______ the lung

Answer 17

Collapse

Question 18

The distance between the tidal volume and maximum inhalation is the

Answer 18

Inspiration reserve volume

Question 19

When the IRV and the TV are added together

Answer 19

Inspiratory capacity

Question 20

When you expire as much as you can from your lungs

Answer 20

Expiratory reserve volume

Question 21

The amount of air in the lungs after a maximum expiration

Answer 21

Residual volume

Question 22

The ERV and RV combined

Answer 22

Functional residual capacity

Question 23

The maximum inspiration and expiration

Answer 23

Vital capicity

Question 24

The entire volumes of the lung

Answer 24

Total lung capacity

Question 25

The maximal volumme of air exhaled from end-expiration

Answer 25

Expiratory reserve volume

Question 26

The maximal volume of air inhaled from end-respiration

Answer 26

Inspiratory reserve volume

Question 27

The volume of air in the lungs at resting end-expiration

Answer 27

Functional residual capacity

Question 28

The maximum volume of air that can be inhaled from the resting expiratory

Answer 28

Inspiratory capacity

Question 29

The largest volume measured on complete exhalation

Answer 29

Vital capacity

Question 30

A patient with reduced FRC value may have

Answer 30

A collapsed right lung

Question 31

What effect does COPD have on residual volume

Answer 31

Increases RC

Question 32

Describes the ease at which the lungs can be stretched/inflated

Answer 32

Distensibility

Question 33

Defines the ability of a stretched tissue to return to its resting volume

Answer 33

Recoil

Question 34

Loss of elasticity = ____ recoil, _____ emptying

Answer 34

Low; low

Question 35

A change in lung volume per unit change in Tm

Answer 35

Lung compliance

Question 36

What effect does an increase in collagen fibers have on lung compliance

Answer 36

It decreases compliance and increases lung elasticity

Question 37

Then in which there is no pressure within the lungs

Answer 37

FRC Test Question

Question 38

In residual volume, where does air go first

Answer 38

Apex

Question 39

In functional reserve capacity, where does air go first

Answer 39

Base

Question 40

Where does most function in the lung occur during tidal volume

Answer 40

Base

Question 41

_____ ________ becomes preferred for ventilation in anesthetize patient in lateral position

Answer 41

Upper lung

Question 42

Neonatal respiratory distress syndrome is associated with what in babies

Answer 42

The absence of surfactant

Question 43

In a healthy individual (sitting), the end expiratory air is predominantly from

Answer 43

Apex of the lung

Question 44

The inward tension is ________ proportional to the radius of the alveoli

Answer 44

Inversely proportional

Question 45

What is the primary agent responsible for surface tension

Answer 45

DPPC

Question 46

Pulmonary surfactants are comprised of

Answer 46

Lipoproteins rich in phospholipids

Question 47

A ratio of ______ lecithin;sphingomyelin in Indicative of mature levels of surfactant

Answer 47

2:1

Question 48

A patient recovering form pneumothorax reversal procedure may experience a pinch (while sitting)

Answer 48

During inspiration near the apex