Description:
.jpg)
Intetrapodanatomy，萨克罗腰是一个形容词that meansof or pertaining to theabdominalsegment of the躯干， 在。。之间diaphragmand theac骨。
这lumbar regionis sometimes referred to as the lowerspine, or as an area of the back in its proximity.
In人体解剖学the fivelumbar vertebrae(vertebrae in the lumbar region of the back) are the largest and strongest in the movable part of thespinal column,可以区分缺乏孔在里面transverse process, and by the absence of facets on the sides of the body. In mostmammals，脊柱的腰部区域向外弯曲。
实际上spinal cord（Angelamedulla spinalis）终止了该系列的椎骨一和两个，称为L1和L2。这nervoustissue that extends below this point are individual strands that collectively form thecauda equina。In between each lumbar vertebra a神经root exits, and these nerve roots come together again to form the largest single nerve in thehuman bodythe坐骨神经。坐骨神经穿过每条腿的后部，进入脚。这就是为什么会影响神经根的低背部障碍的原因，例如spinal disc herniation, can cause pain that radiates along the sciatic nerve (sciatica) down into the foot.
这re are severalmuscles在腰部，有助于旋转，柔韧性和强度。这些肌肉容易受伤，尤其是在举起重物或扭曲时举起的同时。腰部muscle straincan be extremely painful but will usually heal within a few days or weeks.
这lumbar portion of the spine bears the most body weight and also provides the most flexibility, a combination that makes it susceptible to injury and wear and tear over time. This is whylow back painis so prevalent.
Reviews
尚无评论。