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Which of these provides passageways for spinal nerves that connect to the spinal cord? A. Lacunae B. Intervertebral foramina C. Intervertebral disks D. Vertebral foramina
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Answer

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Step 1:
I'll solve this anatomy problem step by step:

Step 2:
: Understand the Key Terms

- Lacunae: Small spaces within bone tissue that house bone cells (osteocytes) - Intervertebral foramina: Openings between vertebrae - Intervertebral disks: Cartilaginous cushions between vertebrae - Vertebral foramina: Central openings within each individual vertebra

Step 3:
: Analyze the Spinal Nerve Pathway

Spinal nerves must exit the spinal column and connect to the spinal cord. This requires a specific anatomical passage.

Step 4:
: Evaluate Each Option

- Lacunae: These are bone-related spaces, not nerve passages - Intervertebral disks: Provide cushioning between vertebrae, not nerve passages - Vertebral foramina: Central canal within vertebrae, but not external nerve exits - Intervertebral foramina: These are the specific openings between vertebrae where spinal nerves exit and enter

Step 5:
: Confirm the Anatomical Mechanism

Intervertebral foramina are the precise openings that allow spinal nerves to pass between vertebrae, connecting the spinal cord to different body regions.

Final Answer

Intervertebral foramina