Question

before any fusions occur, from superior to inferior, how many individual verte are there of each type?
12; 7; 5; 5; 4
12; 5; 5; 7; 4
7; 5; 5; 12; 4
7; 12; 5; 5; 4
7; 5; 5; 4; 12

Explanation:

The vertebral column has 7 cervical, 12 thoracic, 5 lumbar, 5 sacral (which fuse into 1 sacrum in adults but are separate initially), and 4 coccygeal (which may fuse in adults). We are looking at the pre - fusion numbers from superior to inferior.

Answer:

D. 7; 12; 5; 5; 4