How are cranial nerves and spinal nerves similar? How are they different? 2. What components come together...

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Biology

How are cranial nerves and spinal nerves similar? How are theydifferent?
2. What components come together to form a spinal nerve?Whatâ€™s the difference between a dorsal root, ventral root, dorsalprimary Ramos,and ventral primary ramus? What type of fibers,sensory or motor, are found in each of these structures?
3. At what level is a spinal tap performed. From anembryological stand point why is this possible?
4. What is the embryological basis for most NTDs? Can they bediagnosed prenatally? Are there any means of prevention?
5. Prenatal ultrasound reveals an infant with an enlarged andexpansion of both lateral ventricles. What is this condition calledand what might have caused it?
6. What are the two parts of the ANS? Where are theirrespective preganglionic neurons located? What cells give riseembryologically to their postganglionic neurons?

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1 Cranial nerves and spinal nerves both are associated with sensory ganglia and autonomic ganglia Cranial nerves are more closely associated with parasympathic ganglia Cranial nerves directly emerged from brain whereas spinal nerves emerged from segments of spinal cord Cranial nerves comprises 12 See Answer

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