11.3 Pulmonary Ventilations

Question 1

Costal aka

Answer 1

Ribs

Question 2

On top of surface of lung

Answer 2

Thin membrane of pleura
(Visceral pleura lines lungs)
(Parietal pleura lines body/chest wall)

Simple squamous epithelium.

Potential space in between them filled with pleura fluid

Question 3

breathing driven by what muscle

Answer 3

Diaphragm

Question 4

Most breathing is passive

Answer 4

True

Question 5

External intercostals help

Answer 5

Inhalation (ribs up)

Question 6

Visceral pleura

Answer 6

Lines organ itself

Question 7

Parietal pleura

Answer 7

Lines the body wall

Question 8

Pleural cavity contains

Answer 8

Potential space, negative pressure

Question 9

Accessory muscle ex

Answer 9

Sternocleidomastoid (lift clavicle)
Abdominal muscles contract pushing diaphragm

Question 10

Diaphragm pulls the

Answer 10

Parietal pleura which then pulls the visceral pleura

Question 11

Pressure difference for lung on inhale

Answer 11

2-3 mmHg less then atmosphere

Question 12

Air entering the pleural space

Answer 12

Can cause lung collapse

Question 13

Tension pneumothorax

Answer 13

Buildup of tension in thoracic cavity (no air out, but air in) can cause pressure on heart and other lung.

IVC kinked. EDV down, Cardiac output decreases, MAP too

Question 14

Pneumothorax

Answer 14

Sucking chest wound

Question 15

Spirometer

Answer 15

Measures respiratory volume

Question 16

Tidal Volume

Answer 16

~ 500 ml, passive breathing

Question 17

Expiratory reserve volume

Answer 17

Most air we can exhale

Question 18

Inspiratory reserve volume

Answer 18

As much air as we can inhale

Question 19

Vital capacity

Answer 19

Biggest breath we can take

Question 20

Always remaining in lung

Answer 20

Residual volume

Question 21

Total lung capacity =

Answer 21

Vital capacity and residual volume

Question 22

Two major respiratory diseases

Answer 22

Restrictive and Obstructive

Question 23

Obstructive disorders

Answer 23

Bronchitis, asthma,
Path is blocked, air can’t reach alveoli

Question 24

Restrictive

Answer 24

Tuberculosis, muscular dystrophy, MS, ALS

Restrict lungs from inflating and increasing volume