Bony Thorax PDF

 Thoracic inlet Directed downward &forward  Anterior: suprasternal notch  Posterior: upper border of T1  Lateral: inner border of i1st rib wy Vertebro-costal: synov...

 Thoracic inlet Directed downward &forward  Anterior: suprasternal notch  Posterior: upper border of T1  Lateral: inner border of i1st rib wy Vertebro-costal: synovial plane 1 Costo-chondral: 1ry cartilaginous DR.Hendawy da 1st sterno-costal: 1ry cartilaginous Rest sterno-costal: synovial plane 2 en 1 Manibrio-sternal: 2nd cartilaginous H 2 Xiphi-sternal: 2nd cartilaginous R. 3 Inter-vertebral disc: 2nd cartilaginous 3 Thoracic outlet D Directed downward &backward  Anterior: xiphoid process  Posterior: lower border of T12  Lateral: costal margin & floating ribs  Suprasternal “jugular” notch Sterno-clavicular joint Opposite disc between T2& T3 synovial saddle Manubrium sterni 1ST sterno-costal joint wy Opposite T3 & T4 Primary cartilaginous Related to thymus gland & Lt.BCV & aortic arch with its branches da Sternal angle “angle of lewis” Rest of sterno-costal joints Opposite disc between T4 & T5 Synovial plane DR.Hendawy Type of joint: secondary cartilaginous en 2nd – 7th ribs” Body H Opposite T5-8 ”middle 4 thoracic vertebrae” R. Xiphi-sternal junction Opposite Upper border of T9 D Type of joint: secondary cartilaginous Xiphoid Process Opposite T9 Attached to sterno-costalis & diaphragm  Anterior longitudinal Ligamentum Supra- Posterior flavum spinus wy longitudinal Inter-spinus Body da Body Spine Pedicle en Lamina H Ligamentum flavum Spine DR.Hendawy R. Inter-spinus ligament Inter-vertebral disc Tip of Spine Type: 2nd cartilaginous D supra-spinus ligament Formation: nucleus pulposus & annulus fibrosis Vertebral arch is formed of pedicles & laminae & spine & transverse / articular processes  Superior articular process Synovial plane wy Superior hemi-facet Facet on head of rib of same number da Facet on Transverse Process Facet on tubercle of rib of the en same number H R. Inferior hemi-facet Facet on head of rib below Inferior articular process D Synovial plane  wy T1 DR.Hendawy T9 da en H R. D T12 T11 T10  wy According to attachment 1. True “vertebro-sternal”: 1-7 2. False: da a)Vertebro-chondral: 8,9,10 b)Floating: 11 & 12 en According to structure H 1. Typical: 3-9 2. Atypical: 1,2, 10,11 & 12 R. The shortest & broadest & strongest rib is 1st The longest rib is 7th D The most prominent rib is 8th The most oblique rib 9th  Neck Superior hemifacet Attached to: Superior& inferior costotransverse ligament facet on body of vertebra above Angle Inferior wy Attached to subcostalis hemifacet facet on body of same vertebra da Facet on tubercle facet on Transverse process of same vertebra en Non-articular part of tubercle H Attached to: lateral costotransverse ligament R. Costal groove DR.Hendawy Related structure: D Intercostal vein, artery, nerve  Groove for subclavian vein wy Groove for Scalene tubercle subclavian artery Attached muscle da Scalenus anterior Neck en Related to "from medial to lateral" o Stellate ganglion H o Superior ICA o 1st posterior ICV o 1st ICN DR.Hendawy R. D Tubercle Head  wy DR.Hendawy da en H R. D