The lumbar vertebrae are located between the thoracic vertebrae and pelvis. They form the lower part of the back in humans, and the tail end of the back in quadrupeds. In humans, there are five lumbar vertebrae. The term is used to describe the anatomy of humans and quadrupeds, such as horses, pigs, or cattle.

2022年2月17日 · What is the lumbar spine? Your lumbar spine consists of the five bones (vertebra) in your lower back. Your lumbar vertebrae, known as L1 to L5, are the largest of your entire spine. Your lumbar spine is located below your 12 chest (thoracic) vertebra and above the five fused bones that make up your triangular-shaped sacrum bone.

The lumbar spine connects with the thoracic spine above at the thoracolumbar junction and the sacral spine below at the lumbosacral joint. The lumbar motion segments may be affected by congenital (birth-related), degenerative, traumatic, or inflammatory disorders.

2023年11月16日 · The lumbar vertebrae are perhaps most easily defined by their stout and think vertebral bodies; they are relatively large, wider laterally compared to anteroposteriorly and thicker in its anterior half compared to posterior (which contributes to the lumbar lordosis). Their intervertebral surfaces are somewhat flattened or slightly concave ...

2019年4月23日 · The lumbar vertebrae are bones that make up the spinal column or backbone, specifically within the lower back. These bones are below the cervical and thoracic vertebrae but above the sacrum or pelvis.

2025年1月13日 · The lumbar spine is strong yet flexible, balancing support, motion, and nerve safety. What is Sacrum? The sacrum is a large, triangular bone located at the base of the spine. It forms through the fusion of five sacral vertebrae (S1–S5) between the ages of 18 and 30. It is positioned at the back of the pelvic cavity and connects to four other ...

2022年5月24日 · The lumbar vertebrae provide a protective casing for all the spinal nerve roots (cauda equina) at the end of the spinal cord. These nerves then run down into the legs and feet to control movement and sensation.

2023年2月3日 · Lumbar vertebrae: These are the vertebrae in the lower back region and are numbered L1 to L5. They are the largest and strongest of the vertebrae and bear the majority of the body’s weight.

The lumbar spine contains 5 vertebrae, labeled L1 to L5, which progressively increase in size going down the lower back. The vertebrae are connected with joints at the back to enable bending and twisting movements of the spine.

2025年1月28日 · The lumbar spine refers to the lower part of the vertebral column, consisting of five vertebrae labeled as L1 to L5.[4] These vertebrae are larger and stronger than the vertebrae in other sections of the spine, designed to bear most of the body's weight and provide structural support. The lumbar spine also houses and protects