WebDec 30, 2024 · There, numerical levels are often mentioned in imaging studies of the spine. S1 refers to the first sacral bone, S2 to the second sacral bone, and so on. S1 is at the top and S5 is towards the bottom. Each number corresponds with the nerves in that part of the spinal cord. S1 nerves affect the hips and groin. WebThere are 7 cervical vertebrae named C1 -C7, having thin intervertebral discs. The first two, C1 (atlas) and C2 (axis), have unique anatomy and help in the rotation of the head. The other five vertebrae, C3-C7, share similar anatomical features.
Magnetic resonance imaging showing lumbar disc herniation. A …
WebLumbar Discs Lumbar Spinal Nerves Soft Tissues of the Lumbar Spine Spinal Cord and Cauda Equina of the Lumbar Spine Causes of Pain in the Lumbar Spine Lumbar Spine Anatomy Video Dermatomes and Myotomes The spinal nerves innervate the skin and the muscles of a specific region. WebA disc made of a gel-like material (nucleus pulposus) surrounded by a thick fibrous ring (annulus fibrosus) is situated between the vertebral bodies of L4 and L5. This disc provides cushioning and shock-absorbing functions to … sightrasher
Anatomy of the back: Spine and back muscles Kenhub
WebDec 12, 2024 · There are numerous described variants of spinal nerve anatomy, such as roots from multiple spinal nerves connecting, early splits in nerve branches, or missing branches. 2 These are generally discovered during surgery for an injury to the spine, spinal cord, or spinal nerve, or testing done in preparation for such a procedure. WebYour spine consists of three sections: Cervical spine (neck). Thoracic spine (upper and middle back). Lumbar spine (lower back). Your thoracic spine is the middle section of your spine. It starts at the base of your neck and ends at the bottom of your ribs. It’s the longest section of your spine. WebThe vertebral disc in the spine is an interesting and unique structure. The discs throughout the spine have three primary functions: They act as a shock absorbers in the spine, positioned between each bony vertebra. They act as tough ligaments that hold … Lower Back Pain Exercises. Back muscles, like any other muscle in the body, … Nerve Irritation from a Herniated Disc. The nerve passing to the next level runs over … sight rail for ak47