Nerve fibres of the parasympathetic nervous system arise from the central nervous system. Specific nerves include several cranial nerves, specifically the oculomotor nerve, facial nerve, glossopharyngeal nerve, and vagus nerve. Three spinal nerves in the sacrum (S2-4) also act as parasympathetic nerves.
The word longevity is sometimes used as a synonym for life expectancy in demography - however, the term longevity is sometimes meant to refer only to especially long-lived members of a population, whereas life expectancy is always defined statistically as the average number of years remaining at a given age.
Noun. 1. bonding-a close personal relationship that forms between people (as between husband and wife or parent and child). personal relation, personal relationship-a relation between persons. female bonding-the formation of a close personal relationship between women. male bonding-the formation of a close personal relationship between men; the rituals known as male bonding do not necessarily involve drinking beer together.