Mechanics of breathing

Question 1

Breathing

Answer 1

The bodily function that leads to ventilation of the lungs aka = external respiration

Question 2

Ventilation

Answer 2

The process of moving gases in (inspiration) & out (expiration) of the lungs

Question 3

Mechanics and breathing

Answer 3

Describes the structural & physiological bases of ventilation

Question 4

Diseases affecting ventilation = obstructive conditions

Answer 4

Asthma
Chronic obstructive pulmonary disease (COPD
Lung cancer

Question 5

Diseases affecting ventilation = restrictive conditions

Answer 5

Intrinsic = pulmonary fibrosis
Extrinsic = pneumothorax, disorders of the thoracic skeleton

Question 6

Idiopathic disease

Answer 6

No clue what the cause is

Question 7

atmospheric pressure aka

Answer 7

barometric pressure

Question 8

P(B)

Answer 8

barometric pressure = constant

Question 9

P(A)

Answer 9

alveolar pressure = variable

Question 10

Inspiration = breathe in

Answer 10

P(B) > P(A)

Question 11

Expiration = breathe out

Answer 11

P(B) < P(A)

Question 12

Inspiratory muscles in quiet breathing

Answer 12

diaphragm

external intercostal muscles stabilise rib cage

Question 13

Inspiratory muscles in increasing effort

Answer 13

diaphragm
external intercostal muscles stabilise rib cage
AND
accessory muscles = neck muscles + shoulder girdle muscles

Question 14

Expiratory muscles in quiet breathing

Answer 14

elastic recoil of tissues

Question 15

Expiratory muscles in increasing effort

Answer 15

internal intercostals

abdominal wall muscles

Question 16

Tidal volume

Answer 16

the volume of air moved in or out of the lungs during normal breathing

Question 17

Inspiratory reserve volume

Answer 17

volume above tidal volume, after a normal expiration take as deep a breath as possible

Question 18

Expiratory reserve volume

Answer 18

volume below tidal volume, after a normal inspiration, breathe out as deeply as possible

Question 19

Residual volume

Answer 19

after maximum expiration, the volume of air remianing in the lungs, cannot be measured by spirometry

Question 20

Vital capacity = VC

Answer 20

maximal inspiration followed by maximum expiration

Question 21

Functional residual capacity = dependent on compliance

Answer 21

total volume of air after a normal expiration (expiratory reserve volume + residual volume)

Question 22

Compliance is defined as …

Answer 22

the change in lung volume per unit change in intrathoracic pressure