NSE 13A/B Lecture Notes - Lecture 1: Suprasternal Notch, Cervical Vertebrae, Thoracic Vertebrae
12 Sep 2016
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Document Summary
Nse13 winter week 1 thorax and lungs. Respiratory center is the brainstem (medulla and pons) 12 pairs of ribs first 7 are attached to the sternum, 8,9,10 are attached to the costal angle. 12 thoracic vertebrae the diaphragm is the floor that separates thoracic cavity from the abdomen. Suprasternal notch (u-shaped depression above sternum b/w clavicles) Sternal angle (angle of louis a few cm below suprasternal notch) Costal angle (costal margins from an angle at the zyphoid process typically <90 degrees) Intercostal spaces (numbered by the rib above it) Lower tip of scapula at level of 7th or 8th rib. Midclavicular line (bisects the center of each clavicle) Scapular line (extends through inferior angle of the scapula) The left lung is narrower because the heart bulges to the left, has two lobes with no middle lobe. The right lung is shorter due to the liver, has 3 lobes.
