2 Circulations In The Lungs

Question 1

What are the 2 lung circulations/blood supply?

Answer 1

Pulmonary

Bronchial (systemic)

Question 2

Where does pulmonary circulation come from?

Answer 2

Right ventricle

Main circulation of lung

Question 3

Where does bronchial circulation come from?

Answer 3

Receives 2% of left ventricular output

Question 4

Bronchial (systemic) circulation
Artery wall thickness?
Pulse pressure
Redistribution of blood?

Answer 4

Thick wall arteries
120/80
Yes

Question 5

Pulmonary circulation
Artery wall thickness?
Pulse pressure
Redistribution of blood?

Answer 5

Thin wall
25/8
No

Question 6

What does O2 and hypoxia cause In bronchial circulation?

Answer 6

O2 = vasoconstriction 
Hypoxia = vasodilation

Question 7

What is bronchial circulation key to?

Answer 7

Deliver O2 to lung tissue

Question 8

What does O2 and hypoxia cause In pulmonary circulation?

Answer 8

O2 = vasodilation

Hypoxia causes local vasoconstriction

Question 9

What is pulmonary circulation key to?

Answer 9

Pick up O2 blood from lung

Question 10

What does poiselles law state?

Answer 10

Small decrease in radius = big change in vascular resistance

Question 11

What’s is poiselles law equation?

Answer 11

Resistance = 8 x L x viscosity / pi x r^4