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.
The Vertebral Column (also called the Spinal Column). It is formed by 26 irregular bones called vertebrae. The vertebral column has five major regions.7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, the sacrum and the coccyx.eatures of the Lumbar Vertebrae: L1-L5. Lumbar Vertebrae: L1 through L5 support the most weight. They have a sturdier construction (larger body and shorter porjections) The vertebral foramen is triangular shaped.