lungs

Question 1

the volume of air expelled from the lungs during maximal forced expiration starting after a maximal forced inspiration

Answer 1

vital capacity

Question 2

obstructive diseases increase functional residual capacity by causing increased____ ____due to increased______ ______.

Answer 2

obstructive diseases increase functional residual capacity by causing increased air trapping due to increased lung compliance.

Question 3

the volume of gas remaining in the lungs at the end of a normal tidal volume

Answer 3

functional residual capacity

Question 4

may decrease when lung compliance or respiratory muscle strength decrease

Answer 4

tidal volume

Question 5

the volume of air entering or leaving the nose or mouth per breath

Answer 5

tidal volume

Question 6

determined by muscles of expiration and the lung’s inward elastic recoil

Answer 6

residual volume

Question 7

decreased functional residual capacity would incur from ____ ____ due to increased elastic recoil

Answer 7

decreased functional residual capacity would incur from pulmonary fibrosis due to increased elastic recoil

Question 8

emphysema increases functional residual capacity because of increased lung______?

Answer 8

lung compliance

Question 9

Vital Capacity is how many liters and a combination of what?

Answer 9

total Vital capacity 4.5L
inspiratory reserve volume 2.5L
Tidal volume 0.5L
Expiratory reserve volume 1.5L

(NOT RESIDUAL VOLUME 1.5L)

Question 10

the volume of gas that that is inhaled during maximal forced inspiration STARTING at the end of normal tidal volume

Answer 10

inspiratory reserve volume

Question 11

Emphysema increases residual volume why?

Answer 11

• decreased lung recoil.
• alveoli are larger and hold more air.
• air trapping occurs increasing dynamic compression due to decreased radial traction

Question 12

lung elastic recoil and chest wall recoil forces are balanced at which lung capacity?
(muscle of respiration are relaxed)

Answer 12

functional residual capacity

Question 13

atelectasis (collapsed alveoli that do not hold air) would do what to residual volume ?

Answer 13

decrease residual volume

Question 14

transmural pressure equals?

Answer 14

outside(intrapleural pressure) - inside(alveolar pressure)

Question 15

surfactant abnormalities would decrease functional residual capacity why?

Answer 15

decreased surfactant
increased surface tension
alveoli shrink in size

Question 16

the volume of gas that is expelled from the lungs during a maximal forced expiration that STARTS at the end of normal tidal volume

Answer 16

expiratory reserve volume

Question 17

expiratory muscle dysfunction would do what to residual volume?

Answer 17

increase residual volume

Question 18

obstructive disease such as bronchitis or asthma attack increase residual volume why?

Answer 18

-increased dynamic compression due to decreased effective radius of airway (mucus obstruction or airway constriction)

Question 19

an important determination of alveolar ventilation

Answer 19

tidal volume

Question 20

the volume of air that is inhaled into the lungs during a maximal inspiratory effort that BEGINS at the end of a normal tidal expiration(the FRC)

Answer 20

inspiratory capacity

Question 21

inspiratory capacity is a combination of what?

How many liters per?

Answer 21

total 3L
inspiratory reserve volume 2.5L
Tidal volume 0.5L

Question 22

increased lung recoil from restrictive diseases would do what to residual volume?

Answer 22

decrease residual volume

Question 23

functional residual capacity is a combination of what?

How many liters per?

Answer 23

total 3L
Expiratory reserve volume 1.5L
Residual volume 1.5L

Question 24

surfactant abnormalities would decrease_______

Answer 24

functional residual capacity

Question 25

the volume of gas left in the lungs after maximal forced expiration

Answer 25

residual volume

Question 26

prevents lung collapse at very low volumes-

physiological peep

Answer 26

residual volume