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An 22 year old man is admitted to the emergency department after an automobile accident.
He has not lost a large amount of blood, but he suffers from a severe crush injury to his right leg. He is conscious and exhibits flaccid paralysis. Electrocardiogram results show a shortened QT interval and an increase in the PR interval (i.e., decreased duration of action potential and decreased conduction velocity). Laboratory results indicate that his serum potassium level has increased to a value of 6.5 mEq/L (normal: 3.5 to 5.0 mEq/L). Thisincrease in serum potassium causes which of the following?
A decreased net driving force for potassium from cells
B.Decreased intracellular potassium concentration
C.Hyperpolarization of the resting membrane potential
D.More negative Nernst potential for potassium
E.More negative resting membrane potential
What are the Haversian canals and the Volkmann's canals of the bones? Is the osseous tissue vascularized? The Haversian canals are longitudinal canals show in the osseous tissu
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THYMU S GLAND Flat, bilobed gland located in the mediastinal space in front of heart. Well developed in new born child and grows upto puberty but starts degenerating the
describe the factors which decide the broad area of scientific activity?
Chromatin is made of DNA molecules associated to proteins known as histones.
Where in eukaryotic cells does mRNA synthesis occur? To where do these molecules migrate? Messenger RNA molecules are synthesized within the nucleus, pass by pores of the nucle
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