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  2. Thoracic vertebrae - Wikipedia

    en.wikipedia.org/wiki/Thoracic_vertebrae

    The twelfth thoracic vertebra has the same general characteristics as the eleventh, but may be distinguished from it by its inferior articular surfaces being convex and directed lateralward, like those of the lumbar vertebrae; by the general form of the body, laminae, and spinous process, in which it resembles the lumbar vertebrae; and by each ...

  3. Thoracic spinal nerve 12 - Wikipedia

    en.wikipedia.org/wiki/Thoracic_spinal_nerve_12

    The thoracic spinal nerve 12 (T12) is a spinal nerve of the thoracic segment. [1] It originates from the spinal column from below the thoracic vertebra 12 (T12). It may also be known as the subcostal nerve.

  4. Spinal nerve - Wikipedia

    en.wikipedia.org/wiki/Spinal_nerve

    Spinal nerve Typical spinal nerve location. Each spinal nerve is a mixed nerve, ... The subcostal nerve comes from nerve T12, and runs below the twelfth rib.

  5. Lumbar plexus - Wikipedia

    en.wikipedia.org/wiki/Lumbar_plexus

    It is formed by the divisions of the first four lumbar nerves (L1-L4) and from contributions of the subcostal nerve (T12), which is the last thoracic nerve. Additionally, the ventral rami of the fourth lumbar nerve pass communicating branches, the lumbosacral trunk, to the sacral plexus. The nerves of the lumbar plexus pass in front of the hip ...

  6. Subcostal nerve - Wikipedia

    en.wikipedia.org/wiki/Subcostal_nerve

    The subcostal nerve (anterior division of the twelfth thoracic nerve [1]) is a mixed motor and sensory nerve contributing to the lumbar plexus.It runs along the lower border of the twelfth rib, often gives a communicating branch to the first lumbar nerve, and passes under the lateral lumbocostal arch.

  7. Twelfth rib syndrome - Wikipedia

    en.wikipedia.org/wiki/Twelfth_rib_syndrome

    Twelfth rib syndrome, also known as rib tip syndrome, is a painful condition that occurs as a result of highly mobile floating ribs.It commonly presents as pain that may be felt in the lower back or lower abdominal region as a result of the 11th or 12th mobile rib irritating the surrounding tissues and nervous systems.

  8. Facet joint - Wikipedia

    en.wikipedia.org/wiki/Facet_joint

    In the thoracic and lumbar spine, the facet joints are innervated by the medial branch nerves from the vertebral segment above the upper segment and the upper segment. For example, the facet joint between T1 and T2 is innervated by C8 and T1 medial branch nerves. Facet joint between L1 and L2; the T12 and L1 medial branch nerves.

  9. Abdominal aorta - Wikipedia

    en.wikipedia.org/wiki/Abdominal_aorta

    The abdominal aorta begins at the level of the diaphragm, crossing it via the aortic hiatus, technically behind the diaphragm, at the vertebral level of T12. [1] It travels down the posterior wall of the abdomen, anterior to the vertebral column. It thus follows the curvature of the lumbar vertebrae, that is, convex anteriorly.

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