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Vertebrae Bones in the Human Body

Vertebral column of the human consist of 33 vertebrae. Vertebrae bones in the human body connected with each through ligaments and intervertebral disc. Top 24 vertebrae are moveable while rest of the vertebrae are fuse with each other.

Regions of the vertebrae bones in human body.

Vertebrae bones in the human body consist of different regions which are as follows,

Cervical Region:

It consist of 7 vertebrae. Which are numbered as C1, C2, C3, C4, C5, C6, C7. It involves in supporting the weight of the head which is approx. 10 pounds. 1st and 2nd vertebrae allows the maximum range of motion. Atlas is the 1st vertebrae which connects with skull, it is ring shape vertebra. It involves in nodding or ‘YES’ movement of the head. Axis is the 2nd vertebra which is responsible for side to side or ‘NO’ movement of the head. It is peg shape vertebra.

Thoracic Region:

It consist of 12 vertebrae. Which are numbered as T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12. It usually involves in protecting the important organs at the chest level such as, heart and lung by holding the rib cage. Connects with the ribs to form the rib cage. It offers a very limited range of motion.

Lumbar Region:

It consist of 5 vertebrae. They are numbered as L1, L2, L3, L4, L5. They are involve in bearing the weight of the body. It is common site of back pain. It is more prone to injury as compared to thoracic spine.     

Sacral Region:

It consist of 5 vertebrae. These are not usually label because they are fuse which each other. It connects the spine with hip joint. Sacral vertebra joins with iliac bone to form pelvic girdle.

Coccyx Region:

It consist of 4 vertebrae. These are not usually label because they are fuse which each other. They provides attachment for the pelvic floor muscles and ligaments.

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