Which of the following are common neuromuscular defect that affect infants? 1. Spinal muscular atrophy 2. Congenital myasthenia gravis 3. Myotonic dystrophy 4. Poliomyelitis
a. 1 only
b. 1, 2, and 3 only
c. 1 and 3 only
d. 1, 2, and 4 only
ANS: B
Many diseases of poor neuromuscular control affect newborns. These include spinal muscular at-rophy, congenital myasthenia gravis, myotonic dystrophy, and many others.
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