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Physiology 3 Exam 3 > Part 4 > Flashcards

Flashcards in Part 4 Deck (19)
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1
Q

Lungs have a natural tendency to?

A

Collapse

2
Q

What keeps the lung against the chest wall?

A

Negative Pleural Pressure “suction”

3
Q

If pleural pressure equals atmospheric pressure what happens?

A

Lungs will collapse

4
Q

What are the causes of a collapsed lung?

A

Puncture of Parietal Pleura

Erosion of Visceral Pleura

5
Q

A puncture in the parietal pleura is also called a?

A

Sucking Chest Wound

6
Q

If a major airway is blocked the air trapped distal to the block will be absorbed by the blood and that segment of the lung will?

A

Collapse

7
Q

What is pleural fluid?

A

Thin layer of Mucoid Fluid

8
Q

Pleural fluid provides?

A

Lubrication

9
Q

Pleural fluid is transudate and the total amount is only a?

A

Few mL

10
Q

Excess pleural fluid is removed by?

A

Lymphatics

11
Q

When excess pleural fluid is removed by lymphatics it helps create what?

A

Negative Pleural Pressure

12
Q

Collection of large amount of free fluid in the pleural space is known as?

A

Pleural Effusion

13
Q

Pleural effusion is due to?

A

Edema of Pleural Cavity

14
Q

What are some causes of pleural effusion?

A

Blockage of Lymphatic Drainage

Reduced Plasma Colloid Osmotic Pressure

15
Q

Cardiac failure (increased capillary filtration pressure) is a possible cause of?

A

Pleural Effusion

16
Q

Infection/inflammation of pleural surfaces which breaks down capillary membranes is another cause of?

A

Pleural Effusion

17
Q

What reduces surface tension forces by forming a monomolecular layer between aqueous fluid lining alveoli and air, preventing a water-air interface?

A

Surfactant

18
Q

Surfactant is produced by?

A

Type II alveolar epithelial cells

19
Q

Sufactant is a complex mix of?

A

Phospholipids
Proteins
Ions