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Why are the lumbar vertebrae more massive than the cervical vertebrae?
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How many cervical thoracic and lumbar vertebrae are there?
Absolutely! They have features unique to the region they are found in, relating to structure and therefore function. Typical cervical vertebrae (C3-C6) usually have bifid spinous processes which point slightly inferiorly. The spinous processes on lumbar vertebrae are oblong in shape and point directly posteriorly. The articular facets of cervical vertebrae face superior-inferiorly, whereas lumbar articular facets face medial-laterally. Cervical vertebrae have transverse foramen on right and left(containing the vertebral arteries), lumbar have none. They have mamillary processes on their superior articular processes. The bodies of lumbar vertebra are larger and thicker than cervical vertebrae, though they are oval/kidney shaped shaped in both regions. The transverse processes of lumbar vertebrae are much longer, for muscle attachment. Cervical vertebrae have anterior and posterior tubercles extending from their transverse processes. The pedicles of lumbar vertebrae are slightly longer and more defined than those of cervical vertebrae. I think that covers everything, let me know if you think of anything else!
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 can you distinguish a lumbar vertebra from a cervical vertebra?
the nerve cord is enclosed while a invertabrae nerve is opened
Why are the five lumbar vertebrae of the 33 spinal vertebrae the largest?
The lumbar vertebrae are the largest because they need to be able to support more weight.
Why the body of the lumbar vertebra is larger than that of the thoracic vertebra and in the thoracic vertebra more than in the cervical vertebra?
The thoracic spine has twelve vertebral bodies. These structures have very little motion because they are firmly attached to the ribs and sternum (breastbone). Distinguished by the presence of coastal facets for the articulation of the heads of ribs. Body is intermediate in size between the cervical and lumbar vertebrae The lumbar spine has five vertebral bodies that extend from the lower thoracic spine (upper back) to the sacrum (bottom of the spine). The vertebral bodies of the lower back are the largest of the spine because they bear the majority of the body's weight. The paired facet joints on the back of the vertebral segments are aligned so that they allow flexion/extension but not a lot of rotation. Does not have coastal facets nor transverse process foramina
Why is the body of the lumbar vertebrae larger than the cervical vertebrae?
The kidney-shaped body of the lumbar vertebrae are the largest vertebral bodies of any other type of vertebra. They are larger because, being lower down along the spine, they need to be able to support greater weight.
What is a vertebrae better known as?
a vertebra is more closely defined according to what part of the spine it's in. It may be cervical (neck), thoracic (chest), lumbar (abdomen), or sacral (hips).
How many thoracic vertebrae are in the vertebral column?
There are a pair of 12 of thoracic vertebrae in the human body. Some variations exist, as in all of nature, but that is most commonly agreed upon number. The vertebrae of the spine are divided into sections (cervical, thoracic, lumbar, sacral and the coccyx). The thoracic 3 and 4 vertebrae control much of the upper back kyphotic curve. There are special areas called dermatomes in our bodies where our spinal nerves can affect certain areas associated with them; skin, muscles, joints, and organs. There are 12 thoracic vertebra in human skleletalTwelve.The adult body has 7 cervical vertebra, 12 thoracic vertebrae, and 5 lumbar vertebrae. It can be remembered as: breakfast at 7am, lunch at 12noon, and dinner at 5pm.There are 12 thoracic vertebrae.12, they are labeled T1 to T12
What is the scientific name neck bone?
They are called vertebrae. Specifically in the neck they are called cervical vertebrae, the lower back are called lumbar vertebrae and the mid back around the ribcage are called thoracic vertebrae.
What is the difference between the cervical vertebrae and thoracic vertebrae and lumbar vertebrae?
The Cervical vertebrae obtain: - Bifid (meaning double) spinous processes - Foramina transversarium for passage of nerves and vessels - The body is a more oval shape - Do not articuate with the ribs The Thoracic vertebrae obtain: - Spinous process (singular) - No foramina transversarium - The body is a small semi-circular shape - Articulate with the ribs -Have demifacets for articulation with the ribs The Lumbar vertebrae obtain: - Spinous process (singular) - No transverse processes - The body is a large circular shape - Does not articulate with the ribs - Demonstrates a "Scotty Dog" when positioned for a left/right anterior/posterior oblique radiograph.
How many vertebrae are in the human body?
Almost all humans are born with 33 separate vertebrae. By adulthood, most have only 24. This is due to the fusion of the vertebrae in certain parts of the spine during normal development. Different textbooks give different answers to this question. The confusion comes from the fact that the two lowest vertebrae -- the sacrum and the coccyx -- are each one bone, but they are made up from smaller bones fused together.There are 24 separate vertebrae; then there is the sacrum, which is formed from 5 fused vertebrae; and finally the coccyx, which is formed from between 3-5 fused vertebrae. Therefore, if the coccyx and sacrum are each classed as one vertebra, then there are 26 vertebrae. If the fused vertebrae are all counted separately, then there are 32-34 vertebrae. 32The human spine has 7 cervical, 12 Thoracic and 5 Lumbar vertebrae as well as 5 (fused) in the sacrum and another 4 (fused) in the coccyx which totals 33.33 in total. 7 cervical, 12 thoracic, 5 lumbar 5 sacral+4 coccygeal (fused)24, and are grouped under the names cervical (7 vertebrae), thoracic (12 vertebrae) and lumbar (5 vertebrae), according to the regions they occupy. -WikipediaThere's a total of 33 vertebrae - comprising... 7 cervical, 12 thoracic, 5 lumbar, 5 sacral and 4 coccyx (fused)The correct answer is 33But usually there are "fused" bones (probably a bad thing) during our human development.I should point out that this number 33 has significance in many other areas besides just the actual number of our human vertebrae.thirty-three (33)vertebraeinhumansThere are 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 5 sacral vertebrae and 4 coccygeal vertebrae. That's a total of 33 vertebrae.333326 vertebrae make up the spine. Oddly enough, we have the same amount of vertebrae as giraffes do!in the human spine there is 7 cervical, 12 thoracic, and 5 lumbar vertebae.The spine consist of 24 moving segments plus the sacrum and the coccyx.33. :)Vertebral ColumnCervical Vertebrae - 7Thoracic Vertebrae - 12Lumbar Vertebrae - 5Sacrum -1Coccyx - 1Total Vertebral Column = 26In the human vertebral column, there exist the following vertebrae:7 Cervical Vertebrae12 Thoracic Vertebrae5 Lumbar VertebraeAlthough these are the vertebrae commonly recognized as the spine, there is also the sacrum (In layman's terms: the arrowhead shaped bone structure at the bottom of the spine, before the tailbone). The sacrum is actually made up of vertebrae which are fused together to make a more whole bone structure.5 vertebrae make up the sacrumAlso, the coccyx (tailbone) is considered another vertebrae1 vertebrae in the coccyx
Is lumbar spinal stenosis less severe than cervical spinal stenosis?
The difference between lumbar spinal stenosis and cervical spinal stenosis is mainly the location of the problem. however, between the two lumbar spinal stenosis is the more severe form of stenosis.
