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Complete the blanks:
Body temperature regulation is a problem in premature infants because the ___ is not yet fully functional. Crebral palsy involves crippling neuromuscular problems. It usually is a result a lack of ____ to the infants brain during delivery. Normal maturation of the nervous system occurs in a ____ direction, and fine control occurs much later than ____ muscle control. The sympathetic nervous system becomes less efficient as agging occurs, resulting in an inability to prevent sudden changes in ____ when abrupt changes in position are made. The usual cause of decreasing efficiency of the nervous system as a whole is ____. A change in intellect due to a gradual decrease in oxygen delivery to brain cells are called _____. Death of brain neurons, which results from a sudden cassation of oxygen delivery, is called a _____.