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Thorax, Hilum contains root (donut&hole) root contains: pulm. aa/vv (lesser circ) main bronchus bronchial aa to lung tissue lymph nodes autonomic nn. Ant. to root-phrenic Post. to root-vagus ???? L. Lung Pulm a. ABOVE main bronchus R. Lung Pulm a. IN FRONT of main b. bronchial a. b/w two from thor. aorta, follow main b anastomose w/ pulm. vein impt for disease/PTE, 2nd rib at sternal angle Transverse thoracic plane -sternal angle to T4/T5 -site of top of pericardium -site of trachea bifurc. ribs articulate w/ vertebrae at vert. body facets & transverse process ???? Thoracic Outlet- -1st rib, T1 vert. cost. cart. Contents- subclavian v/a, carotid a. internal jug. v., brach plexus (inf. trunks) apex (cupula) of lung Thor. outlet syndromes from compression of contents, Thorax ???? Take a walk inside Skin/Super. fascia Serratus anterior Ext. ICM Int. ICM IC V.A.N. Innermost ICM Trans. thor. m Endothor. fascia Parietal Pleura Serous Fluid Visceral pleura Lung, Post.(dorsal) root somatosensory with DRG ???? Spinal nerve splits to rami both w/ sensory & motor (Brown vs. Board) integrated, Spinal nerve splits to rami both w/ sensory & motor (Brown vs. Board) integrated Anterior prim. ramus splits Ant. br. (mostly motor) motor to ICMs with lat./med. brr, Vasculature from inf rib surface Vein (IC) Artery Nerve ???? IC arteries post. off thor. aorta primary source ant. off int. thor. a. 1st off subclavian, Lungs ???? Gross R-3 lobes sup, mid, inf L-2 lobes sup, inf lingula off sup. cardiac notch fissures both have oblique R also has horiz., Lungs ???? Hilum contains root (donut&hole) root contains: pulm. aa/vv (lesser circ) main bronchus bronchial aa to lung tissue lymph nodes autonomic nn. Ant. to root-phrenic Post. to root-vagus, Ribs-curved, flat bones 7 true ribs att. to sternum via costal cart. (1-7) 3 false ribs att to rib above via costal cart. (8-10) 2 floating ribs-no ant. att. (11-12) ???? 2nd rib at sternal angle Transverse thoracic plane -sternal angle to T4/T5 -site of top of pericardium -site of trachea bifurc. ribs articulate w/ vertebrae at vert. body facets & transverse process, Lungs ???? Nerve supply R/L pulm plexi surround roots Sympa. fibers dilate bronchi (inhibit vagal parasym) like asthma inhalers (sympathomimetics) Parasym fibers-vagus n. constricts bronchi opposite autonomic effects than rest of body