PHTY101 Lecture Notes - Lecture 9: Thoracic Vertebrae, Thoracic Inlet, Rib Cage
Document Summary
Topic 9: bones, joints and muscles of thoracic cage. Bones and joints: 12 pairs of ribs: 7 true, 3 false, 2 floating, sternum: manubrium, body, xiphoid process, rib attaches to same vertebra e. g. rib 1, t1, thoracic inlet: Bounded by body of t1, rib 1, superior edge of manubrium: thoracic outlet: Bounded by xiphoid process, costal cartilages 7-10, edges of ribs 11 and 12, body of t12: manubriosternal joint: 1st joint (rib 1): hyaline cartilaginous, immoveable. Rest: synovial, small range, glides and twists: costochondral joints: Articular surfaces: head of rib, demi facet on body of thoracic vertebra, rib 1-t1, rib 2- t1 and t2, continues until rib 10- t10, rib 11-t11, rib 12-t12. Ligament: radiate: from head of rib to body of vertebra above and vertebra of same number and intervening iv disc. Intra-articular: from head of rib to iv disc, divides cavity into two: costotransverse:
