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人的脊柱从背面看是一条直线,而从侧面看则有四道弯曲,即呈“S”型。这四道弯曲分别叫做颈前曲、胸后曲、腰前曲和骶后曲。脊柱的这种“S”形是正常的生理弯曲,对维持人的正常生理功能和运动均有重要意义。那么脊柱的这种“S”形生理弯曲是怎样形成的?有什么作用? 人的脊柱是由24块椎骨、1块骶骨和1块尾骨组成的。椎骨又分为7块颈椎、12块胸椎和5块腰椎。在椎骨与椎骨之间均有椎间盘。在脊柱的四周又有很多韧带和肌肉将其紧
The spine of a human is a straight line seen from the back and four bends are seen from the side, ie “S”. These four bends are called anterior cervical song, posterior song, anterior song and sacral song. This “S” shape of the spine is a normal physiological curvature and is important for the maintenance of normal human physiology and movement. What is the effect of this “S” -shaped physiological curvature of the spine? The spine is composed of 24 vertebrae, 1 sacrum and 1 coccyx. Vertebrae are divided into seven cervical spine, 12 thoracic vertebrae and 5 lumbar spine. Between the vertebrae and vertebrae have intervertebral disc. Around the spine and a lot of ligaments and muscles will be tight