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What are the last 4 fused vertebrae called?
The last 4 fused vertebrae in the spine are called the sacrum. The sacrum is a triangular bone located below the lumbar vertebrae and is formed by the fusion of five sacral vertebrae.
What joints connect with the lumbar vertebrae?
The lumbar vertebrae is a long bone
Is the spine made up of one piece of bone?
No, it is made up of 7 cervical vertebrae, 12 thoracic vertebrae and 5 lumbar vertebrae. Click on 'related links' below and the link will take you to a picture of the spine.
Where is the sacrum located in the human body?
The sacrum is located at the base of the spine, between the lumbar vertebrae and the coccyx. It is a triangular bone formed by the fusion of five sacral vertebrae. This bone helps to support the weight of the body and connects the spine to the pelvis.
Mention 2 important feature of lumbar vertebrae?
Lumbar vertebrae have a lot of important functions, two of which are the cushioning of the spine and the structure of the back itself. Lumbar vertebrae are part of possibly the most important bone group in the body.
What are the three sections of the backbone?
The normal anatomy of the spine is usually described by dividing up the spine into 3 major sections: the cervical, the thoracic, and the lumbar spine. (Below the lumbar spine is a bone called the sacrum, which is part of the pelvis). Each section is made up of individual bones called vertebrae. There are 7 cervical vertebrae, 12 thoracic vertebrae, and 5 lumbar vertebrae.Anatomy of the Spine
What is the largest bone in the spine?
The largest bone in the spine is the lumbar vertebrae, specifically the lumbar vertebra L5. It is located in the lower back and supports a significant portion of the body's weight.
What is a another name for the back bone?
Your back bone is also known as the spine which is made up of 33 vertebrae, the sacrum, intervertebral discs, and the coccyx. There are three sections of vertebrae known as the; the cervical vertebrae (neck), the thoracic vertebrae (middle back) and the lumbar vertebrae (lower back).
Can a human have 34 vertebrae?
Yes. The human spine is made up of three parts, the cervical spine(neck), the thoracic(middle), and the lumbar (lower back). The lumbar consists of 5 vertebrae in the average adult human, but may also only have 4 or 6 vertebrae depending on the individual, although this is not as common. There can be sacralization of the 5th lower lumbar resulting in only 4 lumber vertebrae, or a vertebrae of the sacrum where the individual has an extra 6th lumbar vertebrae. While all adults have 7 cervical vertebrae there is much more variation in the thoracic and lumbar vertebrae. The thoracic too may have a 13th vertebrae resulting in an extra rib. And as mentioned before the lumbar may have 4-6 vertebrae depending on the individual.
How many bones are in the adults back?
It usually consists of 33 vertebrae and is divided into 5 different types: cervical (7), thoracic (12) lumbar (5), sacral (5 - fused) and coccygeal (4 - fused) vertebrae. Your back bone consists of 7 cervical vertebrae (making the neck), then 12 thoracic vertebrae, and 5 lumbar vertebrae.
What is the name of the bone at the base of the spine that connects to the pelvis bone?
The pelvis is made up of three bones; the ilium, the ischium, and the pubic bone. Attached to the back of the pelvis is the sacrum/coccyx which are two bones made of multiple vertebrae that are fused together. Also connected to the pelvic bone is the head of the femur (thigh bone) which sits in the acetabulum of the pelvis and creates the acetabulofemoral joint also known as the hip joint.
Which vertebrae forms a joint with the hip bone?
The fifth lumbar vertebra articulates with the first fused sacral vertebra of the pelvic girdle.
