Hereâs one of the more well known areas of shark anatomy. 1  The fins of a shark are easily recognizable, and immensely important. Most sharks have five different types of fins, while some sharks only have four. These types of fins include: 2  Pectoral. 3  Pelvic. 4  Dorsal. 5  Anal. 6  Caudal.
spinal column. n. 1. (Anatomy) a series of contiguous or interconnecting bony or cartilaginous segments that surround and protect the spinal cord. Also called: spine, vertebral column or rachis Nontechnical name: backbone.
Vertebral column of a goat. The vertebral column, also known as the backbone or spine, is a bony skeletal structure found in vertebrates. It is formed from individual bones called vertebrae (singular: vertebra), which houses the spinal canal, a cavity that encloses and protects the spinal cord. There about 50,000 species of animals that have a vertebral column.