This is the part of the vertebral column that consist of 12 vertebrae.
A Cervical
B Lumbar
C Sacrum
D Thoracic
The correct answer and explanation is:
The correct answer is D. Thoracic.
The vertebral column, also known as the spine, is made up of several regions, each containing a different number of vertebrae. These regions include the cervical, thoracic, lumbar, sacrum, and coccyx.
The thoracic region consists of 12 vertebrae, labeled T1 to T12. These vertebrae are located in the middle of the spine and are attached to the ribs. They serve as a support structure for the ribs and help protect vital organs such as the heart and lungs. The thoracic vertebrae are characterized by the presence of costal facets, which are areas where the ribs articulate with the vertebrae.
The cervical region contains 7 vertebrae, labeled C1 to C7, and is located in the neck. These vertebrae are the smallest and most mobile of all the vertebral regions, allowing for a wide range of head movement.
The lumbar region consists of 5 vertebrae, labeled L1 to L5. These vertebrae are larger and stronger, as they bear much of the body’s weight. They are located in the lower back and are responsible for providing stability and flexibility to the trunk.
The sacrum consists of 5 fused vertebrae, forming the base of the spine and contributing to the pelvis. The sacrum connects the spine to the hip bones, providing support during movement and weight-bearing activities.
In summary, the thoracic region is the section of the vertebral column that consists of 12 vertebrae, each playing a crucial role in supporting the ribs and protecting the chest cavity.