1. which vertebral range does the cervical enlargement exist in? lumbar enlargement? 2. what structure contains the neurons that supply instruction to/from the vertebral levels of the body? 3. what structure covers and protects the brain and spinal cord? what are the different layers called (name from most superficial to most deep)? (include the spaces) 4. what are the two specializations of the pia mater and what are their functions? 5. which root contains only sensory neurons? motor neurons? 6. what kind of neurons exist in the dorsal root ganglion? what is the description of the neuron? 7. true or false: the brain is aware of the stimulus in a stretch reflex, but does not control the muscle’s response. 8. what is the difference between polysynaptic reflexes and monosynaptic reflexes? 9. what is the pathway of a stimuli from the ventral somatic side going up the spinothalamic tract? going back down via the corticospinal tract to the same spot? 10.what is the purpose of the brachial and lumbosacral plexuses?