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.
Classification. One of the most common classification systems of sacral fractures is to use the direction of the fracture line within the sacrum. Vertical fractures can occur in the alae or through the foramina. Oblique fractures can occur anywhere.he sacrum is a triangular shaped bone consisting of 5 fused sacral veterbrae that articulates with the 5 th lumbar vertebra superiorly and the coccyx inferiorly. It is part of the pelvic ring and participates in weight transfer from the trunk to the lower extremities.