1. The dendrites extend from what part of the neuron?
Answer: The cell body
2. Axons conduct nerve impulses in what direction?
Answer: Away from the cell bodytowards the nerve terminals and synapses
3. Where is the anatomic location of the Primary Somatosensory Cortex?
Answer: -Postcentral gyrus of the parietal lobe just posterior to the primary motor cotex.
4. What are the three regions of the brainstem?
Answer: Midbrain, Pons, and Medulla
5. What part of the Central Nervous System (CNS) controls vital life supportsystems (BP,
respiration, cardiovascular control)?
Answer: The brainstem
6. The Medulla contains which cranial nerves?
Answer: VIII, IX, X, XI, XII
7. At what level of the brianstem does the medial leminiscus cross over(decussate)?
Answer: Medulla
8. Is the medial lemniscal tract a sensory or motor tract?
Answer: Sensory
9. Nucleus Gracilis receives sensory information from the upper or lowerextremities?
Answer: Lower extremities
10. What are the synapses of the dorsal column pathway (medial lemniscal tract) on the way
to the sensory cortex?
Answer: Peripheral nerves ascend to spinal cord via dorsal root, synapse at medulla in the
nucleus gracilis (lower) and nucleuscuneatus(upper) nerve impulses decussates asit leaves
medulla, a synapse occursat the thalamus and goes to sensory cortex
11. How many cervical vertebrae are there?
Answer: 7
12. Is the lateral corticospinal tract a sensory or a motor tract?
Answer: Motor
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