pulmonary circulation

Question 1

what are the two pulmonary vessels

Answer 1

pulmonary artery and bronchial artery

Question 2

function of bronchial artery

Answer 2

to carry oxygenated blood to lung musculature

Question 3

how many branches does pulmonary artery have

Answer 3

two

Question 4

where do the bronchial artery arise from

Answer 4

descending thoracic aorta

Question 5

where do right and left bronchial arteries open

Answer 5

azygous vein and superior hemiazygous vein

Question 6

where does blood from distal portion of lung drain

Answer 6

pulmonary vein

Question 7

what is a shunt

Answer 7

a diversion through which arterial and venous blood mix

Question 8

two components of physiological shunt

Answer 8

1. opening of bronchial vein into pulmonary vein
2. thebesian vein opening into cardiac chambers

Question 9

what is mixing of oxygenated and deoxygenated blood called

Answer 9

venous admixture or venous waste

Question 10

what is analogous to physiological shunt (blood waste)

Answer 10

physiological dead space( air waste)

Question 11

difference between pulmonary and systemic vessels

Answer 11

1. thinner
2. larger capillaries
3. more elastic or distensible
4. less developed muscular ling
5. less resistance
6. have physiological shunts
7. low pressure vessels

Question 12

why are pulmonary vessels low pressure

Answer 12

because they are highly elastic

Question 13

pulmonary capillary pressure

Answer 13

7mm of hg

Question 14

pulmonary blood flow

Answer 14

5 L/ min

Question 15

shunt volume

Answer 15

1-2%

Question 16

pathological conditions that increase shunt volume

Answer 16

acute pulmonary infection or bronchiectasis