1110%20Exam%202%20Practice%20Problems%20-%20Fall%202010 -...

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Short Answer (40 points) Please answer questions concisely and write clearly. Sheila, a 40 year-old female, had an uneventful pregnancy with her youngest child, Daniel. He was born via cesarean section at 38 weeks and 6 days of gestation, and he weighed 8 pounds 6 ounces at birth. The delivery was uncomplicated, but the infant had a weak cry and decreased tone (i.e. hypotonia) in his arms upon birth. Daniel’s condition drastically changed within 6 hours of his birth when he began hyperventilating. He was given supplemental oxygen and doctors ran laboratory tests. Daniel’s blood count and levels of serum electrolytes, including sodium, potassium, and magnesium were normal, however calcium was abnormally low. He was eventually weaned from supplemental oxygen, yet his hypotonia persisted. By day 2 of life, Daniel was unable to feed properly. 31. Describe, using words and/or diagrams, how abnormally low calcium levels in the blood could contribute to smooth and/or skeletal muscle contraction impairments. In your answer, be sure to include specifics regarding extracellular calcium’s role in muscle contraction. (5 points) 32. Briefly discuss, using words and/or diagrams, the compensatory mechanisms that are responsible for raising
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This note was uploaded on 04/15/2011 for the course BIOL 1110K taught by Professor Kylaross during the Fall '10 term at Georgia State University, Atlanta.

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1110%20Exam%202%20Practice%20Problems%20-%20Fall%202010 -...

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