A 3 Year Old Child Was Having Difficulty Walking

question 7

Multiple Choice

A 3 year old child was having difficulty walking.He had not met his developmental milestones.His legs actually looked quite strong,with apparently muscular calves.However,the paediatric neurologist ordered a muscle biopsy,which is shown in the accompanying photomicrograph.On the right is an immunohistochemical stain for dystrophin protein.

• A)Becker muscular dystrophy
• B)Duchenne muscular dystrophy
• C)Mitochondrial myopathy
• D)Neurogenic muscular atrophy
• E)Polymyositis

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Definitions:

Impersonal

Lacking personal interest, attachment, or warmth; not relating to or influenced by personal feelings.

Sustained Attention

The ability to maintain attention to a selected stimulus for a prolonged period of time.

Selected Stimulus

A specific environmental event or condition selected by a researcher to observe its effects on the behavior of an organism.

Divided Attention

The ability to process multiple sources of information at the same time or perform more than one task simultaneously.