posterior root the posterior, or sensory, division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the anterior root to form the nerve before it emerges from the intervertebral foramen; each posterior root bears a spinal ganglion that conveys sensory fibers to the spinal cord.he sensory division of each spinal nerve, attached centrally to the spinal cord and joining peripherally with the ventral root to form the nerve before it emerges from the intervertebral foramen.
Most published information about the life span of saltwater fish are from public aquariums where the fish are kept in the best possible conditions. Many saltwater fish succumb to illness early in life due to poor husbandry. Some saltwater species only live an average of 2 to 4 years.
Confidence votes 167. The average lifespan of a goldfish is about 10-15 months with improper care. Many die before that because of poor care such as overfeeding, having too small of a fish tank, not having a good enough filter, forgetting to feed them, ETC.The oldest recorded goldfish lived to be 44 years old but died in 2003.The average lifespan of a goldfish is very flexible and questionable depending on the care provided and the environment the fish is placed. goldfish kept in a bowl will live for about three months. A two goldfish kept in at least a 10 gallon tank with a heater, gravel, light, plants, decor, healthy food, filter, â¦ and thermometer can live up to 25 years!