Arthrology Typical Rib Thorax Head two facets Neck Tubercle facet Angle Proximal end costal cartilage Typical Rib Anterior articulations of ribs Rib 1 to sternum manubrium Fibrous joint No movement Ribs 2 7 true ribs Synovial gliding joints Radiate sternocostal ligaments Ribs 8 10 false articulate with 7 11 12 floating Sternum Rib Articulations 1 Rib Articulations Posterior Posterior Joints Superior costal facet with inferior articular facet of T vertebrae above Inferior costal facet with superior facet of rib with same number Facet on tubercle with transverse process of T vertebrae of same number Radiate ligaments head Costotransverse ligaments tubercle with transverse process Posterior Joints Posterior Joints CostoVertebral Joints CostoVertebral Joints 2 CostoVertebral Joints Muscles associate with the ribs Intercostals External Internal Innermost Transversus thoracicis Levatores costarum Muscles Muscles Innervation Blood Supply Innervation Blood Supply 3 Muscles Nerves Levatores Costarum Muscles Diaphragm Origin Insertion Nerve Supply Phrenic C3 C4 bilaterally Diaphragm Diaphragm 4 Diaphragm Diaphragm Phrenic Nerve Combined actions of mm of respiration Inspiration Diaphragm External intercostals Levatores costorum Accessory SCM Scalenes Expiration Mostly passive Abdominals Internal intercostals MM of Respiration Abdominal Muscles Anterior Abdominal Wall Skin Subcutaneous fascia fat Rectus Sheath Rectus abdominus External obliques Inguinal ligament Inguinal canal contents hernia 5 Fascia Fascia Rectus Sheath Fascia Rectus Sheath Fascia Muscles Muscles 6 Muscles Muscles Inguinal Ligament Inguinal Ligament Canal Inguinal Ligament Canal Inguinal Ligament Canal 7 Inguinal Canal Femoral Sheath Spermatic Cord Spermatic Cord Femoral Nerve Artery and Vein Dermatomes Abdominals Anterior wall continued Internal obliques Transversus abdominus 8 Internal Oblique Transversus Abdominus Posterior Abdominal Wall Posterior Abdominal Wall Quadratus Lumborum Psoas Minor Psoas Major Iliacus Posterior Abdominal Wall Quadratus Lumborum O Iliac Crest Laterally I 12th rib transverse process of lumbar vertebrae A Side bending of trunk Reverse elevation of pelvis AKA hip hiking N Anterior rami of lumbar nerves 9
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