The Vertebral Column

The spine consists of 33 vertebrae, which combine to form a single structure. The spine is in the center of the body from the base of the skull to just below the hip bone. The spine is divided into five sections. The cervical spine consists of seven vertebrae, thoracic vertebrae, twelve vertebrae, five, humerus, five vertebrae and coccyx, and four vertebrae. Each vertebra is separated by an intervertebral disc and joined together by ligaments and muscles.

The anatomy and physiology of the spine are in humans, the spine is also called the spine or the spine. It has 24 joint vertebrae and 9 vertebra fused to the coccyx and tibia. The spine protects the spinal cord in the spine and provides protection and flexibility. The vertebrae are grouped by site (see Figure 1) The seven vertebrae of the cervical vertebrae are the closest to the neck and are moving to 12 thoracic vertebrae (behind the central upper part)

Invertebrates are animals without spine or spine. The spine is made up of small bones called vertebrae. The scientific name attached to an animal without a backbone is Invertebrata, which means that there are no vertebrae. More than a million invertebrates and about 40,000 vertebrates are known. As invertebrates are diverse, scientists divide them into seven major organizations called gates. Echinoderms are made up of groups of external needles such as sandfish, starfish, sea urchin, Portuguese, sea cucumber. On the animal door (Porifera), there are animals with pores throughout the body called sponges. Coelenterata Gate, also known as Knydaria, includes animals such as water, sea otter, sea anemone and coral. These animals are characterized by special stinging organs called sacs. Mollusk doors are composed of animals called molluscs

Animals are divided into four important features: symmetry, body cavities, tissues and spine. Our main concern is the spine and biota, which is the invertebrate - lack of the main chain - or the vertebrate - has the spine. I saw several living creatures with different indications for invertebrates and vertebrates.