The lumbar spine ( lumbar vertebrae ) make up the lumbar section of the spine, also called the lumbar spine. Humans have five, six mostly ungulates and predators seven lumbar vertebrae. In birds, the lumbar vertebra with the sacrum are fused to Synsacrum.
The vertebral body ( corpus vertebrae ) is approximately cylindrical. The vertebral arch ( arcus vertebrae) begins with relatively strong feet ( pediculi arcus vertebrae) that at the top (with animals front) and bottom ( back) each show a notch ( notch vertebral superior or inferior, in animals notch vertebral or cranial caudalis ). Both feet are united in the lamina arcus vertebrae and thus form the vertebral foramen ( foramen of vertebrae).
On the vertebral arch a strong spinous sitting ( spinous process ). Down arises when people from the vertebral arch of the auxiliary fort (Processus accessory ), which also occurs in wild animals, but showing out accordingly.
At the vertebral arch rises up and down ( in animals front and rear) on both sides of a condylar articular process superior / inferior and cranial / caudal for the articulation with the adjacent vertebrae. On the side, the top / front articular process of a thickening of the mastoid process (Processus mamillaris ) adjacent.
The both sides of the side facing the transverse process ( processus transversus ) is relatively long in lumbar vertebrae.
The lumbar spine bears the full weight of the fuselage and gives the weight of the sacrum on.