Plumonary Vessels

Question 1

What do pulmonary arteries do?

Answer 1

Gas exchange

Question 2

Describe the left pulmonary artery. Length? Position? When does it branch?

Answer 2

Shorter. Anterior to descending aorta. Branches within the lung

Question 3

Describe the right pulmonary artery Length? Position? When does it branch?

Answer 3

Longer. Anterior to tracheal bifuracation. Posterior to ascending aorta, SVC. Branches outside the lung.

Question 4

Pulmonary veins.

What do they have?

Where do they drain?

How many are there? Why?

Answer 4

They have Oxygenated blood.

Drain into the left atrium.

Variable number leaving the lung due to genetics.

Question 5

Describe a Pulmonary Embolism.

Answer 5

Veins do not have muscle to pump blood. Depends on contracting muscle. Blood pools around valves. Clots form. Clot breaks and lodges in the lung. Highly fatal. Serious for non-mobile patients.

Question 6

Bronchial vessels.

How many arteries?

Where does each originate?

What do they supply?

Answer 6

1 or 2 for each lung. Left from Aorta.

Right from 3rd intercostal artery or left bronchial arteries.

Supply conducting passages of respiratory system.

Question 7

Describe how the vagus nerve innervates the bronchioles.

Answer 7

Parasympahetic nervous system. CN10 Constricts bronchioles and vessels.

Question 8

Describe how the Cardiac Plexus innervates the bronchioles.

Answer 8

Sympathetic nervous system. originates in the cervical and thoracic areas. Dilates bronchioles and vessels of the bronchial tree and heart.