There is a bone on the lab bench in front of you. on it, you see that there is a smooth and slightly convex articular surface. this bone marking would be considered a facet, such as those found on the vertebrae.
The cervical spine (C1-C7), thoracic spine (T1-T12), lumbar spine (L1-L5), sacral spine (S1-S5), and tailbone are the vertebrae (back bones) of the spine. A disc separates every vertebra from the next. The spinal cord is encased in and secured by the vertebrae.
Specialized hyaline cartilage, which forms articular surfaces, offers a wear-resistant, low-friction lubricated surface that is compressible and elastic and can withstand tremendous compression and shear stresses during weight bearing and muscular contractions.
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