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Stack #36564
Lungs
Question | Answer |
---|---|
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 |