December 20, 2022

Autonomic Nervous System has the following functions : Reflex Activities : The ANS is involved in complex reflex activities that depend on sensory input to the CNS and on motor output. Reflex actions are rapid and are coordinated subconsciously in the brain, i.e., below the level of the cerebrum. Deals with Excitation and Stressed Conditions

The differences between sympathetic and parasympathetic nervous system according to their origin, character and effect on respective organs are listed in table. Sympathetic Parasympathetic Origin From all thoracic and upper 3 lumbar segments. From cranial 3, 7, 9, 10 and sacral 2, 3, 4 segments. Character Short preganglionic and long post-ganglionic fibres. Long preganglionic and