Ans

1. ANSANS
Prof. Vajira WeerasingheProf. Vajira Weerasinghe
Dept of PhysiologyDept of Physiology

3. Sympathetic vs parasympathetic Sympathetic vs parasympathetic
►Distribution on different organsDistribution on different organs
►Actions on different organsActions on different organs
►Drugs acting on receptors Drugs acting on receptors
►Reflexes in different systems Reflexes in different systems

4. Sympathetic vs parasympathetic Sympathetic vs parasympathetic
►Distribution on different organsDistribution on different organs

5. Fig. 9.6Fig. 9.6

6. Sympathetic (Thoracolumbar) Sympathetic (Thoracolumbar)
DivisionDivision
►Preganglionic cell bodies in lateral Preganglionic cell bodies in lateral
horns of spinal cord T1-L2: horns of spinal cord T1-L2:
thoracolumbarthoracolumbar
►Preganglionic axons pass through Preganglionic axons pass through
ventral roots to ventral roots to whitewhite rami rami
communicantescommunicantes to the to the
retroperitoneal retroperitoneal sympathetic sympathetic
chain gangliachain ganglia

7. Parasympathetic (Craniosacral) Parasympathetic (Craniosacral)
DivisionDivision
►Preganglionic cell bodies in Preganglionic cell bodies in
nuclei of brainstem or lateral nuclei of brainstem or lateral
parts of spinal cord gray matter parts of spinal cord gray matter
from S2-S4from S2-S4
Preganglionic axons from Preganglionic axons from
brain pass to terminal brain pass to terminal
ganglia through cranial ganglia through cranial
nerves III, VII, IX and Xnerves III, VII, IX and X
Preganglionic axons from Preganglionic axons from
sacral region pass through sacral region pass through
pelvic nervespelvic nerves to terminal to terminal
gangliaganglia
►Terminal gangliaTerminal ganglia located located
near organ innervated or near organ innervated or
embedded in wall of organembedded in wall of organ

10. Sympathetic vs parasympathetic Sympathetic vs parasympathetic
►Actions on different organsActions on different organs

12. Sympathetic vs parasympathetic Sympathetic vs parasympathetic
►Drugs acting on receptors Drugs acting on receptors

13. Parasympathetic
Sympathetic

17. salbutamol

18. Sympathetic vs parasympathetic Sympathetic vs parasympathetic
►Reflexes in different systems Reflexes in different systems

19. ANS reflexesANS reflexes
►CVS: CVS:
baroreceptor reflexbaroreceptor reflex
Control of heart rateControl of heart rate
chemoreceptor reflexchemoreceptor reflex
►GIT: GIT:
GIT secretions and motility GIT secretions and motility
►Other:Other:
Urinary bladder controlUrinary bladder control
Sexual reflexesSexual reflexes
SweatingSweating
Other visceral reflexes Other visceral reflexes