Nervous system functions — main roles?
Sensory input, processing, motor output.
Central Nervous System — components?
Brain and spinal cord.
Spinal cord — protected by?
Vertebral column and meninges.
Sensory vs motor pathways — difference?
Sensory carry info to brain; motor carry commands to muscles.
Lemniscal pathway — transmits?
Fine touch and proprioception.
Spinothalamic pathway — transmits?
Pain, temperature, crude touch.
Nerve — structure?
Bundle of axons with connective tissue.
Plexus — definition?
Network of intersecting nerves.
Phrenic nerve — innervates?
Diaphragm for respiration.
Dermatomes — role?
Map of skin innervated by spinal nerves.
Ascending tracts — example?
Gracile, cuneate fasciculi.
Descending tracts — example?
Corticospinal, rubrospinal.
Answer 6 questions on Nervous System Functions and Pathways.
1. What is the primary role of the nervous system?
2. In a clinical setting, how can knowledge of the CNS's role in processing sensory and motor information be most effectively applied?
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