Anatomy & Physiology Question #33
What does the anterior branch or ramus of a spinal nerve supply?
- The meninges and blood vessels of the spinal cord
- Intervertebral ligaments and vertebrae
- Muscles and skin on the front and sides of the trunk and limbs
- Muscles and skin of the back
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.