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Kaplan Qbank USMLE



Author9 Posts
  #1

A 30-year-old man is involved in a bike accident which results in multiple blunt trauma and lacerations to his lower extremities. The left femoral artery is lacerated, and he incurs extensive blood loss and remains hypotensive for hours during transport to the emergency department. On admission, his hematocrit is 12%. Which of the following tissues is most likely to withstand the impact of these events with the least damage?

A Skeletal muscle

B Small intestinal epithelium

C Retina

D Myocardium

E Hippocampus



  #2

A ??

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O my Lord! Open my chest for me ( grant me self-confidence ) and ease my task for me.Ta-Ha 25-26.

  #3

well ...the most sensitive tissue to hypoxia is hypocampus and Purkinje cells...retina and myocard wouldnt tolerate neither...but small intestine ?? we hear about gangrenes there...so I guess Ill stick to skl muscle...

___________________
O my Lord! Open my chest for me ( grant me self-confidence ) and ease my task for me.Ta-Ha 25-26.

  #4

E???

im not too sure, but isnt it body's compensatory response to shunt blood from less important organs like limbs, git to brain, heart, lungsrolling eyes

secondly, blood loss had a considerable duration, so it gives the body that much extra time for compensation.

Had it been a death due to sudden loss of blood, immediately, then my answer would be (A).

please correct me if im wrong.smiling face

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You Should Work Hard To Achieve What You Like, Otherwise, You'll Have To Like What You Have Achieved.

  #5

A

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  #6

A.

  #7

yes A..This tissue is the least metabolically active of the ones listed, and is also able to function with anaerobic glycolysis

yes right feyza...b..Shock can often lead to ischemic enteritis.

c.The retinal neurons and neurons of the brain(e) are very sensitive to hypoxia, and the hippocampus in particular..plz read NA Q3 also at anatomy forum

d.The myocardium is very active metabolically


  #8

ok, thanksnod

___________________
You Should Work Hard To Achieve What You Like, Otherwise, You'll Have To Like What You Have Achieved.

  #9

A.....skeletalk muscles are the most resitant tissues to hypoxia.....nodnod

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i m not perfect but i wanna get close to it......







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