With regard to the vertebral column
A.
The sacrum is formed from three fused vertebrae
B.
The spinous process of a typical thoracic vertebra tends to be square in shape
C.
The spinous process of vertebra Tr is called the vertebra prominens
D.
The supraspinous ligament courses from one adjacent lamina to another
E.
Lordosis is an abnormal condition in which there is an increase in the posterior concavity of the lumbar vertebral column