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(Answered)-hi, how are you? can you find answer biology case study plz


hi, how are you? can you find answer biology case study plz


Parents of a toddler boy noticed he began to walk on his toes, was falling often, and

 

struggled to stand back up. Over time it became more difficult for him to life his

 

knees high, which affected his ability to run. At age six, doctors noted that he had

 

progressive muscle wasting. Over more time, his trunk muscles began to weaken

 

along with the others, and as a result he developed a protuberant abdomen.

 

Lordosis become evident as well. He was confined to a wheelchair at age eight and

 

he began to develop muscular contractures.

 


 

1. This toddler boy has an x-linked recessive disorder that results in progressive

 

muscular weakness and muscle contractures. What is it called? What does it

 

mean to be x-linked?

 


 

2. Define the term "dystrophy".

 

Why is this term appropriate when describing the boy's case?

 


 

3.

 


 

The boy in this case first showed signs of his disorder when he began

 

walking on his toes. What are ALL of the muscles that are used to walk on his

 

toes? (Hint: there are many answers here).

 


 

4. Another common problem seen in patients with this disorder is lordosis and

 

abdominal protuberance. What muscles would become weakened to cause

 

abdominal protuberance? (Hint: there are many answers here too!).

 


 

 


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