KIN 2320 Lecture Notes - Lecture 5: Costovertebral Joints, Thoracic Cavity, Subclavian Vein
18 Sep 2018
School
Department
Course
Professor
Document Summary
Skeleton of thoracic wall: forms the osseocartilaginous thoracic cage: 12 pairs of ribs, costal cartilages -light blue is cartilage, 12 thoracic vertebrae and interverbal (iv) discs, the sternum. Intercostal spaces: which are occupied by intercostal muscles, vessels, and nerves: thoracic apertures, superior thoracic aperture. Ture (vertebrocsternal) ribs (1st 7th) attach directly to the sternum anteriorly though their own coastal cartilage (ribs, cartilage and sternum) False (vertebrochondral ribs) (8th 10th) have cartilages on their anterior ends that are joined to the cartilage of the ribs just superior to them, thus their connection with the sternum is indirect. Floating (free) (11th-12th ribs sometimes the 10th rib) have rudimentary cartilages on their anterior ends that do not connect even indirectly with the sternum, instead they end in the posterior abdominal musculature. Ribs figure 1. 2 attached to the thoracic vertebrae. Head -that is a wedge-shaped and two facets that are separated by the crest of the head.
