CNS Units 1-2

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Author:
hollyerichsen
ID:
278823
Filename:
CNS Units 1-2
Updated:
2014-07-14 11:44:11
Tags:
anatomy
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CNS 1-2
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  1. Can the nervous system store O2 and/or glucose?
    No, must be derived from other systems
  2. Anatomical subdivisions of the nervous system
    • Central
    • Peripheral
  3. What is included in the central nervous system?
    Brain and spinal cord
  4. What is included in the peripheral nervous system?
    Cranial nerves, spinal nerves, ganglia
  5. Another name for the brain
    Encephelon
  6. How many pairs of cranial nerves?
    12
  7. How many pairs of spinal nerves?
    31
  8. Define ganglia
    Clusters of cells spread throughout the body
  9. Functional subdivisions of the nervous system
    • Somatic
    • Autonomic
  10. Voluntary functional subdivision of the nervous system
    Somatic
  11. Functional subdivision of the nervous system that controls skeletal muscle
    Somatic
  12. Somatic subdivision of the nervous system includes CNS or PNS?
    Both
  13. Efferent nerves travel
    away from CNS
  14. Afferent nerves travel
    Towards CNS
  15. Neurochemical that travels between cells (excitatory)
    Acetylcholine (ACH)
  16. Subdivisions of the autonomic (visceral) division of the nervous system
    • Parasympathetic
    • Sympathetic
  17. What does the visceral/autonomic subdivision of the nervous system control?
    • Cardiac muscle
    • Smooth muscle
    • Glands
  18. Efferent somatic pathways travel toward _______, and are composed of how many neurons? Where is the cell body located?
    Toward muscle, composed of 1 neuron, cell body in the CNS
  19. Afferent somatic pathways travel toward the ______, are composed of how many neurons? Where is the cell body located?
    Toward the CNS, composed of 2 neurons, cell body located in the PNS (outside the CNS)
  20. In what neuron pathway can you find norepinephrine?
    Sympathetic nervous system (fight or flight), efferent pathway
  21. How many neurons does the parasympathetic subdivision use to get to it's target?
    2 efferent neurons from the CNS to the target
  22. Where does the transfer of info from one nerve cell to the next occur in the nervous system?
    At the synapse, which is the ganglion in the nervous system
  23. In the parasympathetic system, there are 2 neurons involved in getting a signal to it's target. Which is long, and which is short?
    Pre-ganglionic neuron is long, post-ganglionic is short
  24. Parasympathetic nerves originate from which parts of the spinal cord?
    Top and bottom (Cranium, C1-T1, L2-L5)
  25. In the sympathetic system, there are 2 neurons involved in getting a signal to it's target. Which is long, and which is short?
    Pre-ganglion is short (hugs the cord), post-ganglion is long, with the exception of the digestive tract (splanchnic nerves)
  26. In the sympathetic subdivision of the nervous system, what do we call the ganglion?
    Collateral ganglion, because they run close to the chord
  27. Collateral ganglion (those that run close to the cord) belong to what subdivision of  the nervous system?
    Sympathetic subdivision of the visceral division of the nervous system
  28. Slows down heart rate
    parasympathetic
  29. Speeds up peristalsis
    Parasympathetic
  30. Constricts pupils
    parasympathetic
  31. Constricts respiratory tree
    parasympathetic
  32. Speeds heart rate
    sympathetic
  33. Slows peristalsis
    Sympathetic
  34. Dilates pupils
    sympathetic
  35. Dilates respiratory tree
    sympathetic
  36. General and widespread with a ratio of 1:17
    Sympathetic nerves
  37. More specific and precise with a ratio of 1:2
    Parasympathetic
  38. Besides parasympathetic and sympathetic, what is another subdivision of the autonomic (visceral) division of the nervous system? What does it do?
    Enteric/Intrinsic system of the gut, helps with peristaltic reflexes in the intestines from the esophagus to the anus
  39. What does cholergenic mean?
    Acetylcholine is the neurochemical that travels between cells (excitatory)

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