L4 Vertebra: Key to Lumbar Spine's Strength and Flexibility
The lumbar spine, a crucial part of the human body's support system, is made up of five or six vertebrae. Each of these vertebrae, including L4, plays a vital role in protecting the spinal cord and providing flexibility and strength.
L4, positioned near the bottom of the lumbar section, is one of these robust vertebrae. It features several processes and grooves for muscle attachment, such as the spinous, transverse, inferior, and superior articular processes. These structures enable L4 to support much of the upper body's weight and facilitate a wide range of movements. Unlike other regions of the spine, lumbar vertebrae, including L4, are larger in size due to their significant weight-bearing function. They articulate with each other through circular cartilage discs, known as annulus fibrosus discs, ensuring stability and flexibility.
L4, a key component of the lumbar spine, contributes to the body's overall flexibility and strength. Its unique structure and position make it a crucial element in supporting the upper body and protecting the spinal cord.
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