Today’s article takes us into the spine and the neurovascular around the spine, so let’s take a look at what the relationship between the two really is. 1, the relationship between the spine and the spinal nervous system Between the arch and the vertebral body of each vertebra forms a structure called the vertebral foramen; all the vertebral foramina together form an open bony channel – the spinal canal! Inside the spinal canal is the body’s important central nervous system, the spinal nervous system, which includes the spinal cord and the nerve roots of the 31 pairs of spinal nerves that emanate from the spinal cord. These 31 pairs of spinal nerves directly innervate the skin sensations and skeletal muscle movements of the trunk in addition to the head. 2, the relationship between the spinal column and the sympathetic nervous system In addition to the spinal nervous system, the lower center of sympathetic nerves is located in the entire length of the thoracic segment of the spinal cord and the lateral gray matter of the lumbar medulla in segments 1 to 3. Pairs of sympathetic nerves are located on both sides of the spinal column in a chain, connected by sympathetic trunk ganglia and intersegmental branches. When the sympathetic nerve is excited, the blood vessels in the abdominal cavity and skin endings contract, the heartbeat strengthens and accelerates, the metabolism becomes hyperactive, the pupils dilate, and the working capacity of the tired muscles increases. Sympathetic nerve activity mainly ensures the physiological needs of the body during the state of tension. If the sympathetic nerves are inhibited, the pupils narrow, the heartbeat slows down, the skin and internal organs become vasodilated, the small bronchi contract, gastrointestinal peristalsis strengthens, the sphincter relaxes, saliva secretion increases, etc. From the above, it can be seen that the spine is not only a motor support system composed of bones, it also directly affects the management of the body’s nervous system. 3, the relationship between the spine and the surrounding major blood vessels The spine is located in the middle of the human back, throughout the trunk, in addition to close contact with the spinal nerve and sympathetic nerve, and some important blood vessels, lymphatic vessels also have a close relationship. The spine is a scaffold for the up and down circulation of blood vessels, lymph and other body fluids. The effect of changes in the neutrality and height of the spine on the longitudinal distribution of blood vessels in the body, especially those immediately behind the thoracic and abdominal cavities, is certain. The most important vessel most closely related to the spine is the vertebral artery. The vertebral artery emanates from the subclavian artery, one on each side, and passes through five transverse foramina on both sides of the cervical spine. After ascending through the foramen magnum to the skull, the two vertebral arteries converge at the lower edge of the cerebral bridge to form a thick basilar artery, which is commonly referred to as the vertebrobasilar system. The basilar artery to the midbrain is further divided into two posterior cerebral arteries, which supply blood to the posterior 2/5 of the brain, including the basal surface of the occipital and temporal lobes and the thalamus. The relationship between the vertebral artery and the cervical vertebrae is very close, and the cervical vertebrae provide excellent protection for the vertebral artery from external stimuli, thus protecting the blood supply to the brain as much as possible. However, the health of the cervical vertebrae also directly affects the morphology and structure of the vertebral artery and the passage of blood through it. In addition to the vertebral artery, there are many other vessels affected by the spine, such as the abdominal aorta and the iliac artery. Dissection of the specimen revealed that if the height and neutrality of the spine is altered, the abdominal aorta, which should be vertically descending, will be distorted to varying degrees. Such a change in the aortic vessels will have an altered effect on the blood flow rate and the tension of the vessel wall, and it is conceivable what effect it will have on human health.