Week 1

Question 1

pulmonary tuberculosis (TB)

Answer 1

bacterial infection of the lungs -can spread to other organs -contagion spread through the air through droplets from an infected individual coughing, sneezing, or talking -1/3 of the world’s population is currently infected w TB, but onyl 5-10% become sick or infections (active TB)

Question 2

malignant mesothelioma

Answer 2

-rarer type of lung cancer affecting pleura(mesothelium) -caused by exposure to asbestos -can affect other internal organs

Question 3

bronchogenic carcinoma (lung cancer)

Answer 3

• common type of lung cancer arising from bronchial epithelium -smoking a major cause -highly metastatic due to association of lymphatics in bronchial tissue -typically metastasizes to brain and cranium

Question 4

pulmonary embolism (PE)

Answer 4

-obstruction of pulmonary artery by blood clot, fat globule, or air bubble, often fatal -passes from vein into right side of heart via vena cava and then travels through heart and inot pulmonary artery, obstructing blood flow -DVT common cause

Question 5

pleuritis (pleurisy)

Answer 5

-inflammation of the pleura, may cause “scraping sounds” during auscultation, and can cause sharp stabbing pain

Question 6

hemothorax, hydrothorax, and chylothorax

Answer 6

-other substances, such as blood (hemothorax) from a penetrating would, serous fluid (hydorthorax), or lymph (chylothorax) that inflitrated the pleural cavity may also cause the lung to collapse

Question 7

pulmonary collapse “collapsed lung”

Answer 7

-air inflitrating the pleaural cavity (pneumothrax) can break suface tention tw the visceral and parietal pleura. When this happens, the elastic lung tissue will recoil (collapse) leaving air filled space within the pleural cavity that prevents expansion of the lung during inspiration

Question 8

Innervation of the lungs sympathetics

Answer 8

postganglionic symptathtic never pathway, via the right and left pulmonary plexuses

Question 9

innervation of the lungs parasympathetics

Answer 9

vagus nerve CNX via same plexuses

Question 10

veinous drianage veins and pulmonary veins

Answer 10

bronchial veins drain into azygos system: right-azygos vein left accessory hemiazygos vein or intercostal vein

Question 11

blood supply to the lungs… left bronchila arteries from

Answer 11

aorta

Question 12

blood supply to lungs right bronchila artieries from

Answer 12

intercostal arteries, aorta, or left bronchial a.

Question 13

The lungs are covered by

Answer 13

the viserval pleura