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The Spine (more accurately reffered to as the Vertebral Column) is made up of 33 Vertebrae joined by Inververtebral Disks. These vertebrae are split into 5 regions accoording to their shape (only some details change but general structure is constant) and where they are in body. The uppermmost region is called the Cervical (Ser-vy_cl) region and it contains the top 7 vertebrae. This region is where the upper Lordosa (curve pointing forwards) is seen and it is contained entirely within the head and neck. Within this region are two very cpecial vertebrae called Atlas and Axis. The atlas is the uppermost and it articulates with a part of the Skull called the Occipital Condyle. At this joint flaexion and extension can take place (ie nodding). The next vertebrae down is the Axis which form a unique joint type called a Synovial Pivot Joint. Here rotation around a projection od the axis allows the head (and the atlas) to rotate (as in shaking the hea). The region below this is called the Thoracic Vertebrae which contains the next 12 vertebrea. Its shape is a Kephosa (curve pointing backwards) that is enlarged in a "humped back" or Kephosis (the pleural or kephosa is kephoses with an E). This region is contained entirelt within the thorax as the name suggests. Down from this is the Lumbar Region within which there are only 5 vertebrae. This region forms the lower lordosa and is contained within the Abdomen. Up till now all the vertebrae have been separate bones connected by intervertebral disks but the next to regions have their vertebrae fused together (although not between the two regions). The Sacrum looks like one bone but is actually the next 5 vertebrae all fused together. It is the part that jsits between the posterior parts of the left and right pelvis bones, joined to them by synnovial plane type joints. The final region is the Coxxyxwhich contains 4 more tiny vertebrae that have again fused together to form a single structure. This is the region that used to lead on to form the tail until we evolved not to have one. The combination of the coxxyx and the sacrum makes the lower kephosa.
What else can I help you with?
How many bones are in the lumber?
The lumbar region of the vertebral column contains 5 vertebrae (the bones of the spine).
What bone is the most inferior part of the vertebral column?
The smallest bone in the vertebral column is C1, also known as the Atlas. Unless you look down to Co4/5 in the coccyx, this whole region is smaller that alot of the individual vertebrae. True, however, the coccygeal bones are fused, and are typically thought of as a single bone.
What are the regions of the vertebral column?
The vertebral column is divided into five regions: cervical (neck), thoracic (chest), lumbar (lower back), sacral (pelvic), and coccygeal (tailbone). Each region has a specific number of vertebrae that provide support and flexibility to the spine.
What take up residence at the end of the vertebrae column?
The coccyx, or tailbone, resides at the end of the vertebral column in humans. It is a small triangular bone that consists of three to five fused vertebrae and provides attachment for various muscles and ligaments.
Where is the coxxyx located in the body?
The coccyx, also known as the tailbone, is located at the bottom of the vertebral column, below the sacrum. It consists of three to five fused vertebrae and serves as an attachment site for various muscles, tendons, and ligaments.
What region of the vertebral column contains the largest number of bones?
The lumbar region of the vertebral column contains the largest number of bones, specifically five vertebrae (L1 to L5). However, if considering the entire vertebral column, the sacral region, which is composed of five fused vertebrae, and the coccygeal region, which typically has four fused vertebrae, also contribute to the overall count. In total, the vertebral column consists of 33 vertebrae in children, but the lumbar region specifically has the most individual, unfused bones in adults.
What bones protects spinal cord?
The spinal cord is protected by the vertebral column or spinal column. The vertebral column is a collection of individual bones called vertebrae that encase and protect the spinal cord. The vertebral column is divided into three parts: seven cervical (neck) vertebrae at the top, twelve thoracic vertebrae in the midback, and five lumbar vertebrae in the lower back. Below the lumbar vertebrae, but not protecting the spinal cord, are the sacrum and coccyx (tailbone).
What are the five parts of vertebral column in order from superior to inferior?
The vertebral column consists of five main parts, listed from superior to inferior as follows: the cervical vertebrae (7 vertebrae in the neck), the thoracic vertebrae (12 vertebrae in the upper back), the lumbar vertebrae (5 vertebrae in the lower back), the sacrum (5 fused vertebrae forming the posterior part of the pelvis), and the coccyx (4 fused vertebrae forming the tailbone). Each region has distinct characteristics and functions that contribute to the overall structure and flexibility of the spine.
How many bones are in the lumber?
The lumbar region of the vertebral column contains 5 vertebrae (the bones of the spine).
The vertebral column posses what?
The vertebral column, also known as the spine, possesses a series of vertebrae that are stacked on top of each other, providing structural support and protecting the spinal cord. It consists of 33 individual vertebrae divided into five regions: cervical, thoracic, lumbar, sacral, and coccygeal. Additionally, the vertebral column allows for flexibility and movement while maintaining overall stability and posture. It also serves as an attachment point for muscles and ligaments.
What segment of the vertebral column is the longest and which is the largest?
The longest segment of the vertebral column is the lumbar region, consisting of five vertebrae (L1-L5), which extends from the lower back to the upper sacrum. The largest segment is the lumbar region as well, particularly the L5 vertebra, which bears the most weight and provides support for the upper body.
What bone is the most inferior part of the vertebral column?
The smallest bone in the vertebral column is C1, also known as the Atlas. Unless you look down to Co4/5 in the coccyx, this whole region is smaller that alot of the individual vertebrae. True, however, the coccygeal bones are fused, and are typically thought of as a single bone.
Where is the spinal colum made of?
The spinal column, or vertebral column, is made up of 33 individual vertebrae stacked on top of one another. These vertebrae are categorized into five regions: cervical, thoracic, lumbar, sacral, and coccygeal. Between the vertebrae are intervertebral discs that provide cushioning and support. The spinal column houses and protects the spinal cord, which runs through the vertebral foramen of each vertebra.
What are the regions of the vertebral column?
The vertebral column is divided into five regions: cervical (neck), thoracic (chest), lumbar (lower back), sacral (pelvic), and coccygeal (tailbone). Each region has a specific number of vertebrae that provide support and flexibility to the spine.
Major components of axial skeleton?
The Axial Skeleton is composed of five parts 1) the human skull 2) the ossicles of the middle ear 3) the hyoid bone of the throat 4) the rib cage 5) the vertebral column.
What comprises the vertebra column?
The vertebral column (backbone or spine) of a human supports approximately half the weight of the human body while muscles support the other half. The vertebral column comprises four regions: cervical, thoracic, lumbar, and sacral (or pelvic). Each region of the spine comprises various vertebral bodies separated by discs. The vertebral bodies act as a support column to hold up the spine. The vertebral column protects sensitive nerve roots while providing mobility. The vertebral column is subjected to various types of loads, particularly when a person is seated. Excessive loading of the spine over time often leads to back pain, particularly caused by improper posture while seated. The vertebral column is made up of 33 ring like bones calle vertebrae.It is divided into five main regions -- 7 cervical vertebrae(C1-C7) in the neck,12 thoracic (T1-T7) in the chest, 5 lumbar (L1-L5) in the lower back, 5 fused sacral vertabrae in the sacrum and 4 fused coccygeal vertebrae. The 26 movable vertebrae are linked by movable joints. In between the bones of each joint is an intervertebral disc which is a springy pad of tough, fibrous cartilage that squashes when pressure is exerted absorbing any shocks. Ligaments and muscles around the spine provie stability and assist with controlling muscles.
What are 5 divitions of the vetrbrale column?
There are five known divisions of the vertebrae columns. One been cervical second is thoracic, third lumbar, fourth is sacral and the last is coccygeal unit.
