Question

what in the body stimulates (activates) the sympathetic and parasympathetic branches?

Answer 1

Ans :- HYPOTHALAMUS

Hypothalamus is the source of most of the central control of autonomic function. It recieves input from cerebral structures and projects to brain stem and spinal cord structures to stimulate or activate the sympathetic and parasympathetic input to the organ systems of the body.

The sympathetic nervous system ( SNS ) is one of the two main divisions of the autonomic nervous system, the other being the parasympathetic nervous system. The autonomic nervous system functions to regulate the body's unconscious actions. The sympathetic nervous systems primary process is to stimulate the body's fight or flight response. It is, however, constantly active at a basic level to maintain homeostasis hemodynamic. The sympathetic nervous system is described as being antagonistic to the parasympathetic nervous system which stimulates the body to ,' feed and breed ' and to ' rest and digest' .

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