Lumbar Vertebrae Diagram

The anatomy of the lumbar spine is quite complex. Vertebrae separated by intervertebral discs.

Waru Honors Anatomy Unit 7 Lumbar Vertebrae Diagram Quizlet

The range of motion in the thoracic spine is limited.

Lumbar vertebrae diagram. Here we will attempt to provide a brief overview of lumbar spinal anatomy. The vertebral column is the defining characteristic of a vertebrate in which the notochord a flexible rod of uniform composition found in all chordates has been replaced by a segmented series of bone. The five lumbar vertebrae are numbered l1 to l5.

Cervical neck area 7 vertebrae thoracic mid back 12 vertebrae lumbar lower back 5 vertebrae sacral and coccyx tailbone and. The fifth lumbar vertebra is distinct from the l1 4 vertebrae in being much larger on its front side than in the back. Unlike the cervical vertebrae in the neck the lumbar vertebrae lack the transverse foramina in the transverse processes and also lack facets to either side of the body.

The five vertebrae of the lumbar spine l1 l5 are the biggest unfused vertebrae in the spinal column enabling them to support the weight of the entire torso. 24 are considered to be part of the upper spine whilst the other 11 are found in the sacrum coccyxyour back is divided up into sections. The vertebral column houses the spinal canal a cavity that encloses and protects the spinal cord.

Its chief peculiarity is that it has no body and this is due to the fact that the body of the atlas has. Lumbar low back the main function of the lumbar spine is to bear the weight of the body. The lumbar spine makes up the the lower end of the spinal column.

The lumbar spines lowest two spinal segments l4 l5 and l5 s1 which include the vertebrae and discs bear the most weight and are therefore the most prone to degradation and injury. Lateral labeled diagram of the human vertebral spinal column showing vertebrae numbering order and the 5 different regions of the spine. This human anatomy module is composed of diagrams illustrations and 3d views of the back cervical thoracic and lumbar spinal areas as well as the various vertebrae.

The atlas is the topmost vertebra and along with c2 forms the joint connecting the skull and spine. The muscles of the lower back help stabilize rotate flex and extend the spinal column which is a bony tower of 24 vertebrae that gives the body structure and houses the spinal cord. L1 l2 l3 l4 and l5.

The twelve thoracic vertebrae are numbered t1 to t12. As you can see in the vertebrae diagram above the human spine consists of 33 vertebrae in total. The lumbar vertebrae are in human anatomy the five vertebrae between the rib cage and the pelvisthey are the largest segments of the vertebral column and are characterized by the absence of the foramen transversarium within the transverse process since it is only found in the cervical region and by the absence of facets on the sides of the body as found only in the thoracic region.

It consists of 5 lumbar vertebra that are numbered 1 through 5 from top to bottom ie. It unites the osteology arthrology and myology of the spine and back. These vertebrae are much larger in size to absorb the stress of lifting and carrying heavy objects.

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