Week 1

Question 1

Ventilation

Answer 1

Mov’t of air through the pulmonary airways

Question 2

Perfusion

Answer 2

Mov’t of blood through the pulmonary circulation

Question 3

Diffusion

Answer 3

Exchange of O2 and CO2 at capillary membrane

Question 4

Oxygenation

Answer 4

• providing cells with 02
• need all 3; ventilation, perfusion, and diffusion to have oxygenation

Question 5

Explain the Ventilation- perfusion ratio

Answer 5

• 1:1 ratio
• ratio of the amt of air reaching the alveoli to the amt of vlood reaching the alveoli
• balanced, creating the best oxygenation

Question 6

Describe what type of ventilation perfusion mismatch is occurring in Pneumonia and WHY

Answer 6

• Perfusion w/o ventilation
• blood goes to parts of the lungs that do NOT have O2 to give
• alveoli gunked up, air isn’t moving well

Question 7

Describe what type of ventilation perfusion mismatch is occurring in Pulmonary Embolism and WHY

Answer 7

• Ventilation w/o perfusion
• blood does NOT go to parts of the lungs that have oxygen to give
• obstruction in blood, forming clots

Question 8

Hemoptysis

Answer 8

production of sputum that contains blood

Question 9

Atelectasis

Answer 9

collapse of alveoli resulting in reduced gas exchange

Question 10

orthopnea

Answer 10

dyspnea when lying flat; heart failure

Question 11

Hypoxemia

Answer 11

low oxygen levels in the blood

Question 12

hypercapnia

Answer 12

high levels of carbon dioxide in the blood

Question 13

hypoxia

Answer 13

low levels of oxygen in the body tiisue

Question 14

What is the body’s main ventilatory stimulus

Answer 14

hypercapnia
- too much CO2, need to breathe faster/ more

Question 15

T or F; can’t have a PE without a DVT first

Answer 15

TRUE