The cervical enlargement is due to the cord segments from C3 to T1 and innervates the upper limbs via the brachial plexus. Get started! This is due to the fact that the men's organism tends to be somewhat higher than that of women. One is located in the cervical region while the other is located in the lumbar region. 100: 297-379. The spinal cord is a long, fragile tubelike structure that begins at the end of the brain stem and continues down almost to the bottom of the spine. The white matter of the spinal cord is divided into three major regions: the anterior region, the lateral region and the posterior region. Navarro, X. This shape is due to the fact that the spinal cord is shorter than the spine, so the areas below the lumbar zone must project their nerve endings to the spinal nerves located below it. Around the gray matter region, the spinal cord contains another region consisting of White matter . This region is full of preganglionic neurons. Its upper end continues without net limits with the cranial dura mater. Likewise, the pia mater generates choroidal formations, which are applied against the ependymal membrane of the ventricles. Sacral spinal cord injury S1-S5 The sacral spine is the very base of the spinal column—a triangular bone at the end between the lumbar spine and the tailbone. The brain and spinal cord make up the central nervous system. This area, known as the cervical intumescence, is thicker because this is where the nerve connections to the upper extremities are located. The anterior aspect of the spinal cord contains, in its midline, an anterior medial groove, which borders laterally with the anterior collateral grooves. Although it only appears in the thoracic area and part of the lumbar, the lateral shaft is of great importance, innervating different structures and participating in the sympathetic and parasympathetic systems of the autonomic nervous system. Game Points. The spinal cord proper ends at the level … This formation is characterized by containing white matter and mixed gray matter. This disease is often used to name spinal cord conditions that have not been caused by trauma. Michael J. Aminoff... [et al.] The cord will terminate in a cessive nerve roots, a bandlike exten- thin-walled sac covered by pia mater, sion of the pia mater will arise from the filum terminale, which fuses with the surface of the spinal cord, dentic- the periosteum of the dorsal surface of ulate ligament, attaching to the dura the coccyx. These nerves are part of your peripheral nervous system. The three-dimensional arrangement of both the anterior and posterior horns makes it possible to form a series of columns running through the spinal cord and forming the anterior and posterior gray columns. A space filled with cerebrospinal fluid called the subarachnoid space is located above the pia mater. We use cookies to provide our online service. With respect to the recently mentioned horsetail, which receives its name due to the similarity of its shape with the tail of that animal, it is the set of nerve fibers that connect with the spinal nerves. It is the lower part of the neuro-shaft, slightly flattened and asymmetrical in shape, which, like the brain, is strongly protected as it is surrounded by the spine. These anterior collateral grooves are the apparent origins of the motor or efferent nerve roots of the spinal nerves. It has been observed that the marrow has different nerve connections that innervate different areas of the body. Finally, the anterior cord of the white matter also contains ascending and descending pathways. TYPES OF SPINAL CORD TUMORS Tumors that start in spinal tissue are called primary spinal tumors. First of all, it should be noted that the spinal cord is the most extensive nervous tissue in the human body.