Anatomy and Physiology

There ar 7 cervical vertebrae, 12 pectoral muscle vertebrae and 5 lumbar vertebrae, sacrum and coccyx. The spinal curves provide architectural long suit and support of the goad. They dist poke funute the vertical pressure on the lubber and balance the weight of the body. If the spine were absolutely straight, it would be more(prenominal) believably to buckle under the pressure of the weight of the body. When individually(prenominal) of the earthy curves of the spine be present, the spine is a sluggish perplex. That is, its strongest position and usually the safest to exercise in. When we get to perfect posture, the curves of the spine be helping us balance. There are some(prenominal) differences: Lumbar vertebrae are much larger than thoracic vertebra. completely skeletal elements are larger in lumbar vertebra. The vertebral body of lumbar vertebrae is larger and cylindrical / kidney shaped whereas that of a thoracic vertebra is small and heart shaped. Vert ebral Foramen: orbitual in thoracic Vertebrae and angular in Lumbar. Thoracic Vertebra articulates with the ribs and to the ribs to the sternum. They are therefore much little mobile and less likely to develop degenerative osteoarthritis. They have 6 additional scenes on them which the lumbar do non have.

2 hemi-facets on each side of the body (total 4) for interpreter with its profess rib and with the rib below and a facet on each cross(prenominal) process (total for articulation with the tubercle of its own rib. The zygapohyseal joints (joints between articular facets) of the thoracic vertebra are directed vertically so they particularize flexion and extension but cede rot ary motion. The zygapophyseal joints of lumb! ar vertebra are circular and the articular processes entwine thereby limiting rotation and indeed flexion and extension. however a fair get of flexion and extension does shoot place. Combined together, the thoracic vertebra defend the thoracic spine a concave curvature anteriorly whereas the lumbar vertebra produce a lordosis (convex anteriorly). The L5 or lowermost...If you indispensability to get a beneficial essay, order it on our website: OrderEssay.net

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