Anatomy & Physiology Question #33


What does the anterior branch or ramus of a spinal nerve supply?


  1. The meninges and blood vessels of the spinal cord
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  2. Intervertebral ligaments and vertebrae
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  3. Muscles and skin on the front and sides of the trunk and limbs
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  4. Muscles and skin of the back
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The correct answer is C. The ventral rami supplies the antero-lateral parts of the trunk and the limbs including the muscles and skin. They are mainly larger than the dorsal rami and help invert back muscles.The ramus of a spinal cord does not supply the meninges, blood vessels, intervertebral ligaments, vertebrae, muscles, or skin on the back.

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