A component of the central nervous system, it sends and receives information between the brain and the rest of the body. 8 cervical (C1-C8) nerves emerge from the cervical spine (neck) It is composed of nerve fibres that mediate reflex actions and that transmit impulses to and from the brain. ... Joint capsule - fibrous layer outside synovial membrane; Collateral ligaments - hold bones together, reduce movement in unwanted directions. Spinal Cord & Nerves. The cord is protected within the spinal canal and runs from the brainstem to the lumbar area where the cord fibres separate. Just as the skull protects the brain, vertebrae protect the spinal cord. 5. how many coccyx vertebrae. The spinal nerves are divided into four main categories of spinal nerves based on the location from which they branch . This condition is called facet joint hypertrophy. If the spinal cord supports injury, … The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.It encloses the central canal of the spinal cord, which contains cerebrospinal fluid.The brain and spinal cord together make up the central nervous system (CNS). Your spinal cord. And while hydraulic lifts can move in only one direction, your joints provide movement and variability in many directions. The spinal cord is a cylindrical structure, greyish-white in colour. How Many Bones Make Up the Human Spine? However, there are many surprising facts about the spinal cord, including the following: The spinal cord is like a main headquarters of nerves with the peripheral nervous system, consisting of 43 pairs of sensory and motor nerves, connecting the brain and spinal cord to the other parts of the body. After the spinal cord stops in the lower thoracic spine, the nerve roots from the lumbar and sacral levels come off the bottom of the cord like a "horse's tail" (named the cauda equina) and exit the spine. The spinal column of vertebrae contains the spinal cord - the string of nerves that control and sense many body functions. This article looks at the stages of recovery and what to expect. Did you know the number of joints is not fixed at 360 in all the individuals? In most adults, the spine is composed of 33 individual back bones (vertebrae). These allow us to control the many muscles in our bodies. The spinal cord begins at the base of the brain and extends into the pelvis. The spinal cord is responsible for sending messages from the brain to all parts of the body. The diameter ranges from 13 mm in the cervical and lumbar regions to 6.4 mm in the thoracic area. The human spinal column is made up of 33 bones - 7 vertebrae in the cervical region, 12 in the thoracic region, 5 in the lumbar region, 5 in the sacral region and 4 in the coccygeal region. 7. how many thoracic vertebrae. STUDY. It is also important to understand that the lumbar vertebrae are much different than the upper segments of the spine because the spinal cord does not extend the entire length of the lumbar spine. The spinal cord does not run through the lumbar spine (lower back). The spinal cord and meninges are contained in the spinal canal, which runs through the center of the spine. A spinal fracture may be remedied with surgery, but the abnormal movement of vertebrae or pieces of bone can cause a more severe spinal cord injury. Spinal Cord Segments - Photographs (not to scale) Compare the relative amount of gray and white matter at each level of the spinal cord. cord in the spinal levels that serve the hindlimbs. . 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