The Lungs

Question 1

which 4 structures make up the root of the lung?

Answer 1

pulmonary and bronchial arteries, pulmonary veins, primary bronchi, nerves, lymph nodes

Question 2

do the lungs extend beyond the 1st rib and clavicle?

Answer 2

yes

Question 3

discuss the lymphatic drainage of the lungs

Answer 3

The lymphatics of the lungs and visceral pleura drain into the bronchopulmonary nodes at the bifurcation of the larger bronchi at the lung hila. From here, lymphatics pass to the tracheobronchial node which drain eventually into the thoracic duct and right lymphatic duct.

Question 4

on which surface of the lung is the hilum found?

Answer 4

medial

Question 5

discuss the pulmonary circulation

Answer 5

the portion of the circulatory system which carries deoxygenated blood away from the RV to the lungs via the pulmonary arterym and returns oxygenated blood to the LA via the pulmonary veins.

Question 6

discuss the bronchial circulation

Answer 6

supplies oxygenated blood and nutrition to the lung tissue and larger airways. The bronchial arteries enter the lungs at the hilum along with the pulmonary arterieries. Two bronchail arteries supply the left lung and one on the right. The bronchial veins return this deoxygenated blood yo the systemic circulation (heart).