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Flashcards in pulmon Deck (11):
1

Features of the trachea

is about 5 inches long and 1 inch in diameter; courses inferiorly anterior to esophagus and posterior to aortic arch

2

features of the cartilaginous rings

are 16 - 20 C-shaped rings

3

features of the bronchus

divides into right and left main (primary) bronchi at the level of the sternal angle of Louis

4

features of the right bronchus

it is shorter, wider, and more vertical than the left bronchus; aspirated foreign objects more likely to pass into this bronchus

5

features of the secondary bronchi

supply lobes of each lung (three on the right, two on the left)

6

features of the tertiary bronchi

supply bronchopulmonary segments (10 for each lung)

7

what happens to the bronchi beyond the tertiary bronchi

the passageways narrow considerably and eventually lose their cartilaginous support; thus forming bronchioles, with a terminal bronchiole supplying a lobule of the lung.

within the lobules, the respiratory bronchioles divide into alveolar ducts, sacs and alveoli

8

what is the lung surrounded by

pleura
- visceral pleura: reflects off of the lung surface, innervated by the ANS (no tiene sensibilidad), irrigated by bronquiole arteries
- parietal pleura: lines the inner aspect of the thoracic cage, irrigated by intercostal arteries (consta de 3 porciones; costal, mediastinica y diafragmatica)

9

what is the hilum

its a point at which structures (bronchus, vessels, nerves and lymphatics) enter or leave the lung

10

features of the each lung

- lobes: three (superior, middle, inferior) in the right lung, two in the left lung
- horizontal fissure: only on right lung, extends along line of 4th rib
- oblique fissure: on both lungs, extends from T2 vertebra to 6th costal cartilage
- impressions: made by adjacent structures, in fixed lungs
- hilum
- lingula
- cardiac notch: indentation for the hear in left lung
- pulmonary ligament: double layer of parietal pleura hanging from the hilum that marks reflection of visceral pleura to parietal pleura
- bronchopulmonary segment: 10 functional segments in each lung supplied by a segmental bronchus and a segmental artery from the pulmonary artery

11

inervacion de los pulmones

se deriva de los nervios vagos y simpaticos
no existen fibras sensitivas dolorosas