Quiz 2 Repiratory

Question 1

What 3 factors affect east of ventilation?

Answer 1

1. Surface tension
2. Compliance
3. Airway resistance

Question 2

How does surface tension affect ease of ventilation?

Answer 2

.Surface tension arises at the interface where water meets air.
.The polar water molecules are more strongly attracted to each other then they are to the gas molecules in the air.
.Within a sphere such as a bubble or alveolus surface tension creates an inwardly directed force which pulls the sphere inward making it smaller
.surfactant is a complex mixture of phospholipids and lipoproteins and reduces the tendency to collapse
.during breathing inspiration must overcome the surface tension within the alveoli so they can expand and fill with air

Question 3

What does compliance refer to in regards to the ease of ventilation?

Answer 3

Compliance refers to the ease with which the lungs and thoracic wall can be expanded
High compliance= expands easily
Low compliance= cannot expand easily

Question 4

Compliance decreases with what certain conditions?

Answer 4

Tuberculosis
Pulmonary Edema
Emphysema

Question 5

How does airway resistance affect ease of ventilation?

Answer 5

Any condition that obstructs passageways increases resistance this more pressure is needed to force air through.
Increased airway resistance with asthma and COPD

Question 6

What is the difference between
1. eupnea
2. Costal breathing
3. Diaphragmatic breathing

Answer 6

1. Normal easy breathing
2. Shallow chest breathing
3. Diaphragmatic breathing

Question 7

How many breaths does the average person take per minute at rest?

Answer 7

12
(Approximately 6 litres)

Question 8

What are 3 important respiratory laws?

Answer 8

1. Boyles law
2. Dalton’s law
3. Henry’s law

Question 9

What do the 3 respiratory laws reference?

Answer 9

1. Boyles law= breathing
2. Dalton’s law=diffusion
3. Henry’s law=hemoglobin

Question 10

What is the premis of Boyles Law?

Answer 10

If the size of a container is decreased, the pressure of the gas inside the container will increase

Question 11

What is the premis of Dalton’s law?

Answer 11

Diffusion

Question 12

What is the premis of Henry’s law?

Answer 12

The quantity of a gas that will dissolve in a liquid is proportional to the partial pressure of the gas and its solubility