1.

Body temperature regulation is a problem in premature

infants because the (1) is not yet fully functional. Cerebral

palsy involves crippling neuromuscular problems. It usually is

a result of a lack of (2)_ to the infant's brain during deliv-

ery. Normal maturation of the nervous system occurs in a

(3) _direction, and fine control occurs much later than (4)

muscle control. The sympathetic nervous system becomes less

efficient as aging occurs, resulting in an inability to prevent

sudden changes in (5) when abrupt changes in position

are made. The usual cause of decreasing efficiency of the ner-

vous system as a whole is A change in intellect due to

a gradual decrease in oxygen delivery to brain cells is called

(7) Death of brain neurons, which results from a sudden

cessation of oxygen delivery. is called a (8)

Biology

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