Classification of vertebral bones
How many types of vertebral bones are there?
Vertebrae are the 33 individual bones that interlock with each other to form the spinal column. The vertebrae are numbered and divided into regions: cervical, thoracic, lumbar, sacrum, and coccyx (Fig. 2). Only the top 24 bones are moveable; the vertebrae of the sacrum and coccyx are fused.
What are the 4 types of vertebra?
CONTENTS
- Cervical vertebrae.
- Thoracic Vertebrae.
- Lumbar Vertebrae.
- Sacrum and Coccyx.
What type of bones are the vertebra?
Irregular bones vary in shape and structure and therefore do not fit into any other category (flat, short, long, or sesamoid). They often have a fairly complex shape, which helps protect internal organs. For example, the vertebrae, irregular bones of the vertebral column, protect the spinal cord.
What are the 12 vertebrates?
From top to bottom, the vertebrae are:
- Cervical spine: 7 vertebrae (C1–C7)
- Thoracic spine: 12 vertebrae (T1–T12)
- Lumbar spine: 5 vertebrae (L1–L5)
- Sacrum: 5 (fused) vertebrae (S1–S5)
- Coccyx: 4 (3–5) (fused) vertebrae (Tailbone)
What are the five main groups of vertebrae?
As mentioned above, our vertebrae are numbered and divided into five regions: cervical, thoracic, lumbar, sacrum, and coccyx. Did you know? Only the top 24 bones are moveable. The vertebrae of the sacrum and coccyx are fused.
What are the 4 functions of the vertebral column?
The vertebral column provides attachments to muscles, supports the trunk, protects the spinal cord and nerve roots and serves as a site for haemopoiesis.
What are the 3 types of vertebrae and how are they different?
The lower five vertebrae from the ribs to the sacrum constitute the lumbar spine. They form the largest vertebrae in the spine.
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Key Differences between Cervical, Thoracic and Lumbar Vertebrae.
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Key Differences between Cervical, Thoracic and Lumbar Vertebrae.
| Cervical Vertebra | Thoracic Vertebra | Lumbar Vertebra |
|---|---|---|
| Numbered as | ||
| C1 to C7 | T1 to T12 | L1 to L5 |
| Size | ||
What are 3 types of ribs?
According to their attachment to the sternum, the ribs are classified into three groups: true, false, and floating ribs.
What are the two main parts of the vertebrae?
The bony ring attached to the vertebral body consists of several parts. First, the laminae extend from the body to cover the spinal canal, which is the hole in the center of the vertebrae. Second, the spinous process is the bony portion opposite the body of the vertebra.
What are 3 differences between cervical and thoracic vertebrae?
The thoracic vertebrae are larger than the cervical bones and have longer spinous processes. In addition to longer spinous processes, rib attachments add to the thoracic spine’s strength. These structures make the thoracic spine more stable than the cervical or lumbar regions.
What are the differences between each type of vertebrae?
The key difference between cervical thoracic and lumbar vertebrae is their location. Cervical vertebrae are in the neck region while thoracic vertebrae are in the thorax (chest region) and lumbar vertebrae are in the lower back region. There are 7 cervical vertebrae, 12 thoracic vertebrae, and 5 lumbar vertebrae.
How do you remember the types of vertebrae?
You can use a meal-related mnemonic to remember them – imagine a crunchy breakfast at 7 am (7 cervical vertebrae), a tasty lunch at 12 noon (12 thoracic vertebrae), and a light dinner at 5 pm (5 lumbar vertebrae). The vertebral column is not straight.
Why is thoracic vertebrae called D?
Oneii gives both D/dorsal and T/thoracic as the translation of D from French to English. There is no entry for dorsal, but the translation of “rachis dorsolombaire” is given as “thoracolumbar spine.” So, French medical records use either dorsal or thoracic to refer to the 12 vertebrae just below the cervical vertebrae.
What’s the difference between thoracic and lumbar?
Definition. Thoracic vertebrae refer to the each of the twelve bones of the backbone to which the ribs are attached while lumbar vertebrae refer to the any of the vertebrae situated below the thoracic vertebrae and above the sacrum. Thus, this is the fundamental difference between thoracic and lumbar vertebrae.