Which vertebrae are known as the lower back region?

Which vertebrae are known as the lower back region?

• A. Thoracic
• B. Lumbar
• C. Sacrum
• D. Coccyx

Answer: (B)

The lower back region is the lumbar spine, which consists of five lumbar vertebrae that sit between the thoracic vertebrae above and the sacral region below. These vertebrae are larger and sturdier than those higher up, because they bear most of the body's weight and provide stability for standing and lifting. Their thick, strong bodies and strong muscle attachments support flexion, extension, and some side-to-side movement, while lacking the rib facets that characterize the thoracic vertebrae. The sacrum and coccyx lie below as fused pelvic and tailbone bones, completing the axial skeleton in that area.

The lower back region is the lumbar spine, which consists of five lumbar vertebrae that sit between the thoracic vertebrae above and the sacral region below. These vertebrae are larger and sturdier than those higher up, because they bear most of the body's weight and provide stability for standing and lifting. Their thick, strong bodies and strong muscle attachments support flexion, extension, and some side-to-side movement, while lacking the rib facets that characterize the thoracic vertebrae. The sacrum and coccyx lie below as fused pelvic and tailbone bones, completing the axial skeleton in that area.