Quick Answer. Water droplets form on the outside of a glass of ice water due to condensation. The temperature of the glass is cold enough to cool down the water vapor in the surrounding air, so it turns from gas to liquid. Therefore, drops form more readily during warm weather than cold weather. Continue Reading
The vertebral column usually consists of 33 vertebrae: 24 presacral vertebrae (7 cervical, 12 thoracic, and 5 lumbar) followed by the sacrum (5 fused sacral vertebrae) and the coccyx (4 frequently fused coccygeal vertebrae).The 24 presacral vertebrae allow movement and hence render the vertebral column flexible.9-10 and 39-11). Five (sometimes six) vertebrae are fused in the adult to form the sacrum, which can be felt below the small of the back.. The sacrum articulates above with L5, laterally with the hip bones, and inferiorly with the coccyx.
SUMMARY: LSTVs are common within the spine, and their association with low back pain has been debated in the literature for nearly a century. LSTVs include sacralization of the lowest lumbar vertebral body and lumbarization of the uppermost sacral segment.ther morphologic characteristics of transitional vertebrae include squaring of the upper sacral segment when it is lumbarized and wedging of the lowest lumbar segment when it is sacralized (Figs 7 and 8).