'Which one of the following categories of vertebrae are correctly numbered
Which one of the following is showing the correct sequential order of vertebrae in the vertebral column of human beings?
(a) Cervical - lumbar - thoracis - sacral - coccygeal
(b) Cervical - thoracis - sacral - lumbar - coccygeal
(c) Cervical - sacral - thoracic - lumbar - coccygeal
(d) Cervical - thoracic - lumbar - sacral - coccygeal
The cervical and the lumbar vertebrae form an outward curve, which is called (i)_______, while the thoracic and sacral vertebrae form an inward curve called (ii)_______.