Structure of the vertebrae

Vertebrae in lower vertebrates are more complex and the relationships of their parts to those of higher animals are often unclear. The vertebrae bodies are made of a spongy form of bone called cancellous bone.

As with all physiology the anatomy of a structure is related directly to its function.

Structure of the vertebrae. The vertebral column is divided into five main sections and each contains a specific number of vertebrae. There are 33 vertebrae in total the upper 24 vertebrae are articulating and separated. The adult vertebral column consists of 24 vertebrae plus the sacrum and coccyx.

The vertebrae are subdivided into cervical thoracic and lumbar regions. There are seven cervical vertebrae C1C7 12 thoracic vertebrae T1T12 and five lumbar vertebrae L1L5. The main portion of the vertebra is the body which is divided into two parts.

The centrum and the posterior vertebral arch also called the neural arch. The vertebrae bodies are made of a spongy form of bone called cancellous bone. They are covered in cortical bone which is denser harder bone.

The 33 vertebrae make up five distinct spine segments. Starting at the neck and going down toward your buttocks rear end these segments include. The top part of the spine has seven vertebrae C1 to C7.

These neck vertebrae allow you to turn tilt and nod your head. The cervical spine makes an inward C-shape called a lordotic curve. The structure of the cervical vertebrae may differ from the structure of the thoracic vertebrae they have the shape of a cylinder.

Inside each bone there is a substance covered with a cortical layer. In turn this substance consists of rungs. With their help I.

It is composed of 31 individual bones called vertebrae and the entire column is divided into 5 sections cervical thoracic lumbar sacrum and coccyx in descending order of location. Each section has a different number of vertebrae interspersed with intervertebral discs. The vertebral column spine or backbone is a curved structure composed of bony vertebrae that are interconnected by a series of cartilaginous intervertebral discs.

The vertebral column can be divided into the cervical thoracic and lumbar vertebrae the sacrum and coccyx. No two vertebrae are identical however each can fall under the category of typical or atypical vertebrae depending on their structural. The vertebral body on either side presents two partial facets - superior and inferior costal demi-facets for articulation with the head of its corresponding rib and with the head of the rib below.

The pedicles of the thoracic vertebrae are directed backward and slightly upward. The laminae are broad and thick. They overlap does of subjacent vertebrae like tiles of a roof and connect with the pedicles to surround and.

Lumbar Vertebrae Definition. The lumbar vertebrae are bones that make up the spinal column or backbone specifically within the lower back. These bones are below the cervical and thoracic vertebrae but above the sacrum or pelvis.

They are the largest of the unfused vertebrae and are larger than the bones located above. The vertebral column spine or backbone is a curved structure composed of bony vertebrae that are interconnected by cartilaginous intervertebral discs. It is part of the axial skeleton and extends from the base of the skull to the tip of the coccyx.

The spinal cord runs through its center. The vertebral columnalso referred to as the spine spinal column or backboneis the medial and vertical axis of the body. The major component of the axial skeleton it is comprised of 33 bones each of which interlocks with the bones immediately above and below.

Structure of a Vertebrae. All vertebrae share a basic common structure. They each consist of an anterior vertebral body and a posterior vertebral arch.

The vertebral body forms the anterior part of each vertebrae. The general structure of vertebrae in other animals is largely the same as in humans. Individual vertebrae are composed of a centrum body arches protruding from the top and bottom of the centrum and various processes projecting from the centrum andor arches.

The body of a vertebra is the large cylindrical mass of bone that serves as the primary weight-bearing structure throughout the vertebral column. The intervertebral disc is the thick fluid-filled ring of fibrocartilage that serves as a shock absorber throughout the vertebral column. Vertebrae typically contain a body a prominent bony disc that bears weight.

Intervertebral discs attach to the body. A vertebral arch projects to the rear of each body. It consists of two parts a thick pedicle which is a structure that connects one bone to another and a.

The vertebral column supports the bodys physical structure and nervous system enabling movement and sensation. Pathology of the spine can lead to debilitating outcomes on quality of life. The vertebral column spine defines the animal subphylum Vertebra or vertebrates of the phylum Chordata.

In humans it is composed of 33 vertebrae that include 7 cervical 12 thoracic 5 lumbar 5. In comparison to the other vertebrae. Besides of what they lack when compared against cervical and thoracic vertebrae foramen transversarium uncinate process costal demi-facets lumbar vertebrae are easily recognized by the size of their body which must be necessarily bigger in order.

A typical vertebra consists of an anterior body and a posterior vertebral arch. The body serves for weight bearing. The vertebral arch surrounds and protects the spinal cord.

The vertebral arch is formed by the pedicles which are attached to the posterior side of the vertebral body and the lamina which come together to form the top of the arch. The vertebral column in humans consists of 33 bones. However this number reduces to 26 with an increase in age.

The vertebral column comprises cervical vertebrae thoracic vertebrae lumbar. An anterior section also known as the vertebral body and a posterior segment also known as the vertebral neural arch make up a vertebra. When the vertebrae are articulated together they form a solid but flexible structure that encloses the vertebral foramen or.

Vertebrae in lower vertebrates are more complex and the relationships of their parts to those of higher animals are often unclear. In primitive chordates eg amphioxus lampreys a rodlike structure the notochord stiffens the body and helps protect the overlying spinal cordThe notochord appears in the embryos of all vertebrates in the space later occupied by the vertebral bodiesin. Structure and Function.

As with all physiology the anatomy of a structure is related directly to its function. The smaller size of cervical vertebrae relative to the other regions is a reflection of their decreased load-bearing requirements.