Skeletal system vertebral column

Most superior section- 7 of them. Somatic skeleton axial skeleton vertebral column ribs sternum skull appendicular skeleton.

The vertebral column is divided into five main sections and each contains a specific number of vertebrae.

Skeletal system vertebral column. 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. The vertebral column spine is made up of 33 different bones called vertebrae.

The first 24 vertebrae are called articulating and the last 9 are called fused In addition to the distrinction between articulating and fused vertebrae are divided into five different categories. Cervical veretebrae thoracic vertebrae lumbar. Vertebral column is part of the axial skeleton that supports the body weight and balances the body on its axis.

Primitive chordates had a single rod-like notochord as axial skeleton but in later groups a vertebral column consisting of a series of vertebrae replaced it increasing flexibility and bending of body possible. The vertebral column spine consists of 26 vertebrae bones Table 1. It provides support for the head and trunk of the body protection for the spinal cord and connecting points for the ribs and muscles.

The vertebral column spinal column or backbone is made of individual bones called vertebraeThe names of vertebrae indicate their location along the length of the spinal column. There are 7 cervical vertebrae 12 thoracic 5 lumbar 5 sacral fused into 1 sacrum and 4 to 5 small coccygeal vertebrae fused into 1 coccyx Fig. It consists of 80 bones that include the skull vertebral column and thoracic cage.

The appendicular skeleton consists of 126 bones and includes all bones of the upper and lower limbs. What is the center of the skeletal system. Development and structure of the skeleton The axial skeleton contains 80 bones including the skull spine and rib cage.

A vertebra consist of different parts which originate from the the sclerotomal cells. Early during the fourth week of development these sclerotomal cells from the somites surround the. Ventromedial aspect of the notochord to form the centrum and the intervertebral disc.

Dorsal portion of the neural tube to form the neural. Most superior section- 7 of them. Lower Section before the Sacrum- 5.

Lower Section before the coccyx- 5 fused bones. Bones begin to fuse between the ages of 16-18. Completely fused by 34.

The vertebral column is also known as the spinal column or spine Figure 1. It consists of a sequence of vertebrae singular vertebra each of which is separated and united by an intervertebral disc. Together the vertebrae and intervertebral discs form the vertebral column.

Anatomy Physiology Skeletal System Vertebral Column and Hyoid Bone. The first cervical vertebra. The second cervical vertebra.

The weight bearing component of the vertebrae. They increase in size as one progresses down the lumbar vertebral column. Region of the vertebral column formed by seven vertebrae C1 - C7.

The upper two are named. A small bony projection off the right and left side of each vertebrae. The two transverse processes of each vertebrae function as the site of attachment for muscles and ligaments of the spine as well as the point of articulation of the ribs in the thoracic spine.

VERTEBRAL COLUMN - Spinal column or backbone - Made of individual bones called vertebrae Cervical 7. Neck atlas first axis - second Thoracic 12. Articulate with the ribs on the posterior side of the trunk Lumbar 5.

Largest. Permits articulation of the two hip bones Coccyx 4- 5 fused into 1. Remnant of tail vertebrae VERTEBRAL COLUMN.

Vertebral Column Spine Supports rib cage Serves as a point of attachment for the pelvic girdle Protects the spinal cord Consists of a series of separate bones named for their location Seven cervical neck Twelve thoracic chest Five lumbar lower back. In this anatomy course part of the Anatomy Specialization you will learn how the components of the integumentary system help protect our body epidermis dermis hair nails and glands and how the musculoskeletal system bones joints and skeletal muscles protects and allows the body to move. The term vertebral column describes the entire set of vertebrae excluding the ribs sternum and pelvis.

The normal vertebral column is made up of 29 vertebrae 7 cervical 12 thoracics 5 lumbar and 5 sacral and three or four coccygeal segments. The vertebral column consists of 24 bones each called a vertebra plus the fused vertebrae of the sacrum and coccyx. The thoracic cage includes 12 pairs of ribs.

Development of Vertebral Column. In general the vertebrae develop from the sclerotome portions of the somites. During the 4th week of development the mesenchymal cells of the sclerotomes migrate to form blocks-like of mesenchymal cells on the side of the spinal cord and notochord figure 10 A.

Somatic skeleton axial skeleton vertebral column ribs sternum skull appendicular skeleton. Vertebrae - consist of a centrum or body 1 or 2 arches plus various processes. Concave at both ends.

Most fish a few salamanders Necturus caecilians. Convex in front. Chapter 5 The Skeletal System 71 15.

Figure 56 is a lateral view of the vertebral column. Identify each numbered region of the column by listing in the numbered answer blanks the region name first and then the specific vertebrae involved for example sacral region S to S. Also identify the modified vertebrae indicated by numbers 6.

The axial skeleton of the adult consists of 80 bones including the skull the vertebral column and the thoracic cage. The skull is formed by 22 bones. The skull is formed by 22 bones.

Also associated with the head are an additional seven bones including the hyoid bone and the ear ossicles three small bones found in each middle ear. Lessons on the cervical thoracic lumbar sacral and coccygeal vertebrae of the vertebral column. Click for the full step-by-step revision guide.

Learn anatomy faster and. Remember everything you learn. Vertebral Column Developmental anomalies pathological changes or obesity can enhance the normal vertebral column curves resulting in the development of abnormal or excessive curvatures Kyphosis also referred to as humpback or hunchback is an excessive posterior curvature of the thoracic region.

This can develop when osteoporosis causes weakening and erosion of the anterior.