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ANS Prof. Vajira Weerasinghe Dept of Physiology
 
Sympathetic vs parasympathetic  <ul><li>Distribution on different organs </li></ul><ul><li>Actions on different organs </l...
Sympathetic vs parasympathetic  <ul><li>Distribution on different organs </li></ul>
Fig. 9.6
Sympathetic (Thoracolumbar)  Division <ul><li>Preganglionic cell bodies in lateral horns of spinal cord T1-L2: thoracolumb...
Parasympathetic (Craniosacral) Division <ul><li>Preganglionic cell bodies in nuclei of brainstem or lateral parts of spina...
 
 
Sympathetic vs parasympathetic  <ul><li>Actions on different organs </li></ul>
 
Sympathetic vs parasympathetic  <ul><li>Drugs acting on receptors  </li></ul>
Parasympathetic Sympathetic
 
 
 
salbutamol
Sympathetic vs parasympathetic  <ul><li>Reflexes in different systems  </li></ul>
ANS reflexes <ul><li>CVS:  </li></ul><ul><ul><li>baroreceptor reflex </li></ul></ul><ul><ul><li>Control of heart rate </li...
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Ans

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  1. 1. ANS Prof. Vajira Weerasinghe Dept of Physiology
  2. 3. Sympathetic vs parasympathetic <ul><li>Distribution on different organs </li></ul><ul><li>Actions on different organs </li></ul><ul><li>Drugs acting on receptors </li></ul><ul><li>Reflexes in different systems </li></ul>
  3. 4. Sympathetic vs parasympathetic <ul><li>Distribution on different organs </li></ul>
  4. 5. Fig. 9.6
  5. 6. Sympathetic (Thoracolumbar) Division <ul><li>Preganglionic cell bodies in lateral horns of spinal cord T1-L2: thoracolumbar </li></ul><ul><li>Preganglionic axons pass through ventral roots to white rami communicantes to the retroperitoneal sympathetic chain ganglia </li></ul>
  6. 7. Parasympathetic (Craniosacral) Division <ul><li>Preganglionic cell bodies in nuclei of brainstem or lateral parts of spinal cord gray matter from S2-S4 </li></ul><ul><ul><li>Preganglionic axons from brain pass to terminal ganglia through cranial nerves III, VII, IX and X </li></ul></ul><ul><ul><li>Preganglionic axons from sacral region pass through pelvic nerves to terminal ganglia </li></ul></ul><ul><li>Terminal ganglia located near organ innervated or embedded in wall of organ </li></ul>
  7. 10. Sympathetic vs parasympathetic <ul><li>Actions on different organs </li></ul>
  8. 12. Sympathetic vs parasympathetic <ul><li>Drugs acting on receptors </li></ul>
  9. 13. Parasympathetic Sympathetic
  10. 17. salbutamol
  11. 18. Sympathetic vs parasympathetic <ul><li>Reflexes in different systems </li></ul>
  12. 19. ANS reflexes <ul><li>CVS: </li></ul><ul><ul><li>baroreceptor reflex </li></ul></ul><ul><ul><li>Control of heart rate </li></ul></ul><ul><ul><li>chemoreceptor reflex </li></ul></ul><ul><li>GIT: </li></ul><ul><ul><li>GIT secretions and motility </li></ul></ul><ul><li>Other: </li></ul><ul><ul><li>Urinary bladder control </li></ul></ul><ul><ul><li>Sexual reflexes </li></ul></ul><ul><ul><li>Sweating </li></ul></ul><ul><ul><li>Other visceral reflexes </li></ul></ul>
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