Physiologic differences between infants, children and adults. I. Central Nervous System. Myelination of nerve fibers incomplete in newborn, muscle tone and reflexes are different (rooting/suckling reflex etc.), cerebral cortex less developed. Pain threshold of young children is lower than that of older children or adults because of more nerve endings/cm2 and immature inhibitory pathways. Infant skull much less rigid than adult; can estimate ICP by palpation of fontanelle. Autoregulation of CBF impaired in the sick newborn.
The 2016 Artesia, New Mexico, population is 12,036. There are 1,211 people per square mile (population density).
As of 1 January 2017, the population of Russia is 144,498,215 excluding Crimea, whose annexation is not recognized by the overwhelming majority of the international community. Including Crimea and Sevastopol, the population was 146,804,372 on January 1, 2017. Around 77% of its population lives in European Russia, while the 23% lives in its Asian part. As of 2015, Russian TFR of 1.777 children per woman was the highest in Eastern, Southern and Central Europe.