Down Syndrome: Condition and Characteristics

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Questions and Answers

What is the most common cause of intellectual disability in the US according to the text?

  • Trisomy 13
  • Trisomy 18
  • Klinefelter Syndrome
  • Down Syndrome (correct)

What is the primary genetic anomaly that causes Down Syndrome?

  • Partial deletion of chromosome 21
  • Extra copy of chromosome 21 (correct)
  • Translocation of chromosome 22
  • Mutations in the genes on chromosome 14

What is the approximate incidence of Down Syndrome at birth for a 20-year-old mother?

  • 1 in 5000
  • 1 in 500
  • 1 in 1000 (correct)
  • 1 in 2000

What is a common physical characteristic of individuals with Down Syndrome?

<p>Flattened nasal bridge (A)</p> Signup and view all the answers

What is a common complication of Down Syndrome in terms of brain development?

<p>Reduced brain volume (D)</p> Signup and view all the answers

What is the approximate percentage of Down Syndrome cases that result from translocation?

<p>4-5% (D)</p> Signup and view all the answers

What is the primary reason for posture and balance problems in individuals with Down syndrome?

<p>Reduced brain volume and smaller cerebellum (A)</p> Signup and view all the answers

What is the characteristic of movement patterns in individuals with severe Down syndrome?

<p>Inefficient movement patterns with compensatory movements (B)</p> Signup and view all the answers

What is the primary difference between movement patterns in individuals with mild and moderate Down syndrome?

<p>Efficiency of movement patterns (B)</p> Signup and view all the answers

What is the primary role of the hippocampus in individuals with Down syndrome?

<p>Long-term memory (A)</p> Signup and view all the answers

What is the characteristic of joint mobility in individuals with Down syndrome?

<p>Joint hypermobility due to ligamentous laxity (A)</p> Signup and view all the answers

What is the associated condition that can be present from childhood to adulthood in individuals with Down syndrome?

<p>Cognitive impairment and intellectual disability (B)</p> Signup and view all the answers

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