Anatomy Chapter 16 Study Questions

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Anatomy Chapter 16 Study Questions
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2013-07-22 20:45:05
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Anatomy
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  1. The _____ division of the automatic nervous system is said to function during "rest and digest."
    parasympathetic
  2. Preganglionic fibers leave the CNS and then synapse on:
    ganglionic neurons
  3. Preganglionic neurons of the automatic nervous system are located in:
    both the brain and the lateral gray horns of the spinal cord
  4. The parasympathetic nervous system is especially active during which physiological state?
    digestion
  5. Sympathetic preganlionic neurons are _____ and have _____ axons.
    short; myelinated
  6. Clusters of ganglionic sympathetic neurons that innervate organs in the abdominopelvic region are called ____ ganglia.
    collateral
  7. Stimulation of the neurons in the celiac ganglion would lead to:
    hydrolysis of liver glycogen reserves
  8. Sympathetic nerves:
    are bundles of postganglionic fibers that innervate organs within the thoracic cavity
  9. The suprarenal medullae secrete:
    both epinephrine and norepinephrine
  10. Postganglionic sympathetic axons can release the neurotransmitter ______ at their effector junctions.
    • - acetylcholine
    • - nitric oxide
    • - norepinephrine
    • - ACh
  11. Stimulation of a1 adrenergic receptors by norepinephrine results in:
    release of calcium ions from intracellular stores
  12. A certain drug decreases heart rate by blocking a receptor on cardiac pacemaker cells. This drug probably binds to _____ receptors.
    beta-1 adrenergic
  13. Ganglionic neurons in the suprarenal gland:
    release epinephrine into blood capillaries
  14. Intramural ganglia in the digestive, urinary, and reproductive organs are innervated by the ____ nerves.
    pelvic
  15. Nicotinic receptors:
    open chemically-gated sodium ion channels
  16. Drugs that block nicotinic receptors would be:
    autonomic blocking agents
  17. Mary accidentally ate poison mushrooms that contain muscarine. What symptoms would you expect to observe?
    • - sweating
    • - diarrhea
    • - salivation
    • - very low heart rate
  18. A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in:
    an increase in blood flow through the vessel
  19. Long-term memories that are with you for a lifetime are called:
    tertiary memories
  20. Based on stimulation studies, the "headquarters" of the reticular activating system appears to be based in the:
    midbrain
  21. The brain waves produced by normal adults while resting with their eyes closed are _____ waves.
    alpha
  22. After arousal by a sensory stimulus, consciousness can be maintained by positive feedback, because of activity in the:
    • - cerebral cortex
    • - motor pathways
    • - sensory pathways
    • - basal nuclei
  23. Hallucinogenic drugs, such as LSD, function by:
    stimulating serotonin receptors
  24. Changes in the central nervous system that accompany aging include:
    • - reduction in brain size and weight 
    • - decreased blood flow to the brain
    • - decrease in the number of neurons
    • - changes in synaptic organization in the brain

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