BIOL 223 Chapter 16-3

  1. Where will the sympathetic preganglionic fibers originate?
  2. The short preganglionic neurons are sometimes called the:
    thoracolumbar division
  3. Are sympathetic preganglionic fibers long or short?
  4. List the three major classes of sympathetic ganglia.
    • sympathetic chain ganglia
    • collateral ganglia
    • adrenal medulla
  5. How many of each type are found in the sympathetic chain?
    • cervical - 3
    • thoracic - 10-12
    • lumbar - 4-5
    • sacral - 4-5
    • coccygeal - 1
  6. What areas of the body will the sympathetic chain innervate?
    the thoracic cavity
  7. List the effects that the sympathetic nervous system will have on the thoracic cavity.
    • increased HR
    • increased BP
    • increased respiration
    • increased sweating from cutaneous glands
  8. List the three types of collateral ganglia.
    • celiac ganglia
    • superior mesenteric
    • inferior mesenteric
  9. The stomach, gallbladder, liver, pancreas, and spleen are innvervated via which collateral ganglia?
    celiac ganglia
  10. The small intesting and proximal 2/3 of the large intestine are innervated via which collateral ganglia?
    superior mesenteric ganglia
  11. The kidneys, bladder, reproductive organs, and lower 1/3 of the large intestine are innervated via which collateral ganglia?
    inferior mesenteric ganglia
  12. How does the neurotransmitter release within the adrenal medulla differ from in the collateral and sympathetic chain ganglia?
    neurotransmitter enters the blood for a much more widespread effect
  13. Will sympathetic postganglionic fibers be long or short?
  14. Several preganglionic fibers bundled together form a:
    splanchnic nerve
  15. What kind of effect will the information travelling rhrough collateral ganglia have on the abdominal and pelvic cavities, excitatory or inhibitory?
  16. What is the function of an alpha 1 receptor?
    increase the release of Ca from the SR, increasing smooth muscle contraction
  17. What is the function of an alpha 2 receptor?
    lowers cAMP levels, inhibitory effect
  18. What is the function of a beta 1 receptor?
    increase HR, BP, metabolism, and lipolysis
  19. What is the function of a beta 2 receptor?
    cause smooth muscle to relax
  20. What is the function of a beta 3 receptor?
    cause an increase in fat breakdown
  21. What type of receptor is on the sympathetic postganglionic neuron?
  22. What type of neurotransmitter will sympathetic postganglionic neurons release?
  23. What type(s) of receptors are on the target tissue within the sympathetic division?
    alpha and beta receptors
  24. What two parts of the body are dilated under effect of the sympathetic division?
    • pupils
    • respiratory passages
  25. What three things are decreased under the effect of the sympathetic division?
    • rate of digestion
    • urinary activity
    • blood flow to reproductive organs
  26. What five things are increased under the effect of the sympathetic division?
    • HR and BP
    • sweating
    • rate of respiration
    • metabolism
    • mental alertness
  27. True or False: Most organs of the body are innervated by both parasympathetic and sympathetic systems.
  28. In a dually innervated organ, whatever the parasympathetic division does, the sympathetic should do the:
Card Set
BIOL 223 Chapter 16-3
Study Cards for Chapter 16 BIOL 223 CSN