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Stack #36564

Lungs

QuestionAnswer
Apex in children may extend above clavicle
lungs extend inferiorly to T10
pleural cavity extends inferiorly to T12 creating costodiaphragmatic recess
R. Bronchus shorter, wider, vertical
L. Bronchus has angle to get past heart, arrives at lung lower
Aspiration of object usually on Right side
Each secondary bronchus distributes to a lobe
R. Bronchial Tree 3 secondary bronchi
L. Bronchial Tree 2 secondary bronchi
Tertiary Bronchus supplies bronchopulmonary segment
Pulmonary aa. supply deoxygenated blood
Bronchial aa. supply bronchial tree
R. bronchial a. is a branch from a posterior intercostal a.
L. side - 2 bronchial aa. arise from aorta
Pulmonary nodes located in the lung
Pulmonary nodes drain to Bronchopulmonary nodes
Bronchopulmonary nodes located in hilum of lung, next to primary bronchus
Bronchopulmonary nodes drain to superior & inferior tracheobronchial nodes
superior & inferior tracheobronchial nodes located above & below bifurcation of trachea
Tracheobroncial nodes drain superiorly to tracheal nodes located along trachea
Lymph from tracheal nodes returns to circulation through r. lymphatic & thoracic ducts
Lung sympathetics T2-T5 & distribute from chain ganglia to root of lung
Lung Parasympathetics supplied by vagus n.
Vagus n. carries visceral sensory fibers which serve as afferent limb of cough reflex
NN. from anterior & posterior pulmonary plexuses around root of lung
Carina is between entrances of primary bronchi - formed by cartilage of last tracheal ring
Carina is a ridge formed by cartilage of last tracheal ring
Carina holds highest density of "itch" & cough afferents
Carina deformed by metastases to inferior tracheobronchial lymph nodes
Pulmonary Thromboembolism Blood clot originating from legs pass through increasingly wide veins to reach heart
Pulmonary Thromboembolism causes ventilation w/o perfusion (air gets to area of lung but no blood to become oxygenated)
No blood causes ischemic
Necrosis death of tissue
Created by: JYarger