What is spinal muscular atrophy (SMA)? SMA’s an autosomal recessive disorder that causes alpha motor neurons in the spinal cord to die, resulting in muscle weakness and atrophy. Subscribe – https://goo.gl/w5aaaV. More videos – https://goo.gl/UhOKiM. Support us on Patreon – https://goo.gl/ZGHEk4.
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