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 muscles of the vertebral column are exceptionally strong and well designed considering they are required to fight the effects of gravity. These muscles are designed to exhibit flexible motion as well as structural support for one of the most complex areas of the human body.he rectus abdominis is found in the abdominal muscles, but it is also responsible for flexing the vertebral column. It is an elongated muscle that resembles a strap. Along the posterior side of the vertebral column, the extensor muscles can be located.