Fun Facts about the name Lany. How many people with the first name Lany have been born in the United States? From 1880 to 2015, the Social Security Administration has recorded 46 babies born with the first name Lany in the United States.
Medical Definition of Sympathetic nervous system. Sympathetic nervous system: A part of the nervous system that serves to accelerate the heart rate, constrict blood vessels, and raise blood pressure. The sympathetic nervous system and the parasympathetic nervous system constitute the autonomic nervous system. Last Editorial Review: 5/13/2016.
The sympathetic nervous system 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.he first cell (the presynaptic cell) sends a neurotransmitter across the synaptic cleft where it activates the second cell (the postsynaptic cell). The message is then carried to the final destination. Presynaptic nerves' axons terminate in either the paravertebral ganglia or prevertebral ganglia.