vertebral column

cervical vertebrae (1-7)

cervical spine - located in neck area - 7 vertebrae numbered c1-c7

thoracic vetebrae (1-12)

12 bones of the backbone that the ribs are attached to

lumbar vertebrae (1-5)

5 large vertebrae in lower back - between thoracic vertebrae and sacrum

sacrum

triangular bone formed from fused vertebrae - between two hip bones of pelvis

transverse ridges

raised line or bump that goes across bone from side to side (not up and down)

sacral foramina

openings in the sacrum

sacral hiatus

opening at bottom of sacrum

median sacral crest

ridge of bone on the midline back of sacrum

ala

wing like structure

coccyx

small, triangular bone at base of spinal column