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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 |