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Region, Bones

Lower Back

Bones in the Lower Back region

25 entries

All Types 25 Muscles 32 Bones 25 Tendons 20 Ligaments 39 Nerves 20 Bursae 20 Joints 20 Vessels 20

25 entries · Bones

Bone Coccygeal Segments vertebrae coccygeae Lower Back The coccyx consists of 3-5 fused or partially fused vestigial vertebrae forming the terminal segment of… Bone Coccyx os coccygis Lower Back The coccyx, or tailbone, consists of three to five fused rudimentary vertebrae at the base of… Bone L1 Vertebra vertebra lumbalis I Lower Back L1 is the first lumbar vertebra at the thoracolumbar junction, the most common level for burst… Bone L1-L5 Vertebrae (Lumbar) vertebrae lumbales (L1-L5) Lower Back The five lumbar vertebrae have the largest bodies of the spinal column (accepting the highest axial… Bone L2 Vertebra vertebra lumbalis II Lower Back L2 is a large lumbar vertebra with a prominent body and strong transverse processes providing attachment… Bone L3 Vertebra vertebra lumbalis III Lower Back L3 is considered the apex of the lumbar lordosis and the most mobile of the lumbar… Bone L4 Vertebra vertebra lumbalis IV Lower Back L4 is at the level of the iliac crests — a key surface landmark — and… Bone L5 Vertebra vertebra lumbalis V Lower Back L5 is the most inferior lumbar vertebra and the site of the most common lumbar disc… Bone Lumbar Accessory Process processus accessorius vertebrae lumbalis Lower Back The accessory process of the lumbar vertebra is a small bony projection on the posterior surface… Bone Lumbar Inferior Articular Process processus articularis inferior vertebrae lumbalis Lower Back The lumbar inferior articular processes face anterolaterally, fitting inside the superior articular processes of the vertebra… Bone Lumbar Mamillary Process processus mamillaris vertebrae lumbalis Lower Back The mamillary process is a small tubercle on the posterior surface of each lumbar superior articular… Bone Lumbar Neural Arch arcus vertebrae lumbalis Lower Back The lumbar neural arch consists of paired pedicles and laminae forming the posterior bony ring around… Bone Lumbar Spinous Process processus spinosus vertebrae lumbalis Lower Back The lumbar spinous processes are broad, horizontally projecting posterior bony projections of L1-L5, providing attachment for… Bone Lumbar Superior Articular Process processus articularis superior vertebrae lumbalis Lower Back The lumbar superior articular processes face posteromedially, articulating with the inferior articular processes of the vertebra… Bone Lumbar Transverse Process processus transversus vertebrae lumbalis Lower Back The lumbar transverse processes project laterally from the junction of the pedicle and the superior articular… Bone Lumbar Vertebral Body corpus vertebrae lumbalis Lower Back The lumbar vertebral bodies are the largest in the mobile spine, supporting the full weight of… Bone Pars Interarticularis pars interarticularis vertebrae Lower Back The pars interarticularis is the bony bridge in the vertebral neural arch connecting the superior and… Bone Sacral Body corpus ossis sacri Lower Back The sacral body comprises the five fused sacral vertebral bodies forming the anterior curved surface of… Bone Sacrum os sacrum Lower Back The sacrum is formed by five fused sacral vertebrae forming a triangular bone that wedges between… Bone Spinous Process processus spinosus vertebrae Lower Back The spinous process is the posterior midline projection of each vertebra, serving as the attachment site… Bone Transverse Process processus transversus vertebrae Lower Back The transverse processes are the lateral projections from each vertebra at the junction of the pedicle… Bone Twelfth (Floating) Rib costa duodecima Lower Back The twelfth rib is the shorter of the two floating ribs (with the eleventh), articulating only… Bone Vertebral Endplate lamina terminalis vertebrae Lower Back The vertebral endplate is the thin cartilaginous and bony interface between the vertebral body and the… Bone Vertebral Lamina lamina arcus vertebrae Lower Back The vertebral laminae are paired flat bony plates connecting the pedicles to the spinous process, forming…