spine
sharp, slender, often pointed projection
The spine, also known as the vertebral column or spinal column, is a complex structure of bones, nerves, muscles, ligaments, and discs that makes up the central axis of the human body.
The spine is divided into five regions: cervical, thoracic, lumbar, sacral, and coccygeal. The cervical region consists of the first seven vertebrae and supports the head and neck. The thoracic region contains 12 vertebrae and supports the chest and upper back. The lumbar region consists of five vertebrae and supports the lower back. The sacral region is composed of five fused vertebrae and forms the posterior wall of the pelvis. The coccygeal region includes four fused vertebrae and forms the tailbone.
The spine is responsible for providing support, balance, and stability to the body. It also encases and protects the spinal cord, which is the main communication pathway between the brain and the rest of the body. The spinal cord is responsible for transmitting sensory information, such as touch and pain, and for controlling voluntary and involuntary movements.
Injuries or disorders of the spine can result in a wide range of symptoms, including pain, numbness, tingling, weakness, and paralysis. Treatment options for spine-related conditions may include physical therapy, medication, injections, surgery, or a combination of these approaches.
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