What are their functions and insertions and ...
discs? between ...
Category: Biology

What are the five regions of the vertebral column? How many bones make up each ...
cervical- 7 vertebrae thoracic- 12 vertebrae lumbar- 5 vertebrae sacrum- 1 bone coccyx- between 3 and 5 (ususally 4 ...
Category: Other - Health

I have home homework and this is the definition for it Any of various small,flattened marine organisms of the subphylum Cephalochordata, allied to the vertebrates but having a notochrod rather than a ...
They are indeed living. Small fish-like creatures; but not related to the fishes. They do not have a spine., but possess a notochord; akin to the vertebrate spinal chord. Here's a Wikipedia ...
Category: Biology