Vertebral Column using the key choices, correctly identify the vertebral pats/areas described as tallows. Enter the appropriate term(s) or letters) in the spaces provided. Key Choices A. Body B. Intervertebral foramina. Superior articular process C. Spinouts process E. Transverse process F. Vertebral arch 1. Structure that encloses the nerve cord 2 Weight bearing part of the vertebra 3. Provides) levers for the muscles to pull against 4. Provides) an articulation point for the ribs -5. Openings allowing spinal nerves to pass 4. The following statements provide distinguishing characteristics of the vertex- brae composing the vertebral column. Using the key choices, identify each described structure or region by inserting the appropriate tern(s) or letters) in the spaces provided. Key Choices A. Atlas B. Axis C. cervical vertebra-typical D. Coccyx F. Sacrum E. Lumbar vertebra G. Thoracic vertebra Type of vertebra(e) containing foramina in the transverse processes, through which the vertebral arteries ascend to reach the brain Its dens provides a pivot for rotation of the first cervical vertebra Transverse processes have facets for articulation with ribs; spinouts process points sharply downward Composite bone; articulates with the hip bone laterally Massive vertebrae; weight-sustaining 6. Tailbone: vet 7, Su of the occipital twelve con
The Correct Answer and Explanation is :
For the first part, identifying vertebral parts/areas:
- Structure that encloses the nerve cord – The correct answer is F. Vertebral arch. This structure forms the canal where the spinal cord passes through.
- Weight-bearing part of the vertebra – The correct answer is A. Body. This is the thick, disc-shaped anterior portion of the vertebra that supports the body’s weight.
- Provides levers for the muscles to pull against – The correct answer is E. Transverse process. These are the lateral projections from the vertebral arch where muscles and ligaments attach.
- Provides an articulation point for the ribs – The correct answer is G. Thoracic vertebra. These vertebrae have facets on their transverse processes and bodies for rib attachment.
- Openings allowing spinal nerves to pass – The correct answer is B. Intervertebral foramina. These are the openings formed by the notches on the pedicles of adjacent vertebrae through which spinal nerves exit.
For the second part, identifying vertebral types:
- Type of vertebra(e) containing foramina in the transverse processes, through which the vertebral arteries ascend to reach the brain – The correct answer is C. cervical vertebra-typical. These vertebrae have transverse foramina in their transverse processes that allow the passage of the vertebral arteries to the brain.
- Its dens provides a pivot for rotation of the first cervical vertebra – The correct answer is B. Axis. The axis has a dens or odontoid process that acts as a pivot for the atlas (the first cervical vertebra) above it.
- Transverse processes have facets for articulation with ribs; spinous process points sharply downward – The correct answer is G. Thoracic vertebra. This type of vertebra is characterized by these features for rib attachment and support.
- Composite bone; articulates with the hip bone laterally – The correct answer is F. Sacrum. The sacrum is a composite bone formed from fused vertebrae and connects with the hip bones at the sacroiliac joints.
- Massive vertebrae; weight-sustaining – The correct answer is E. Lumbar vertebra. These vertebrae are larger and stronger, supporting much of the body’s weight.
- Tailbone; yet – The correct answer is D. Coccyx. The coccyx, or tailbone, is the terminal part of the vertebral column.