Secure 7215901 Chate 11 HamnNurses Need Physiology Hyperkaiema and Excitabie Tis

Question

Secure 7215901 Chate 11 HamnNurses Need Physiology Hyperkaiema and Excitabie Tissues +30 +30 -55 -70 -70 Time (msec) Time (msec) When extracellular K is slightly elevated K- kower When extracellular K is normal, the nerve will leave the nerve cell when i s repolarzing potential that s Since a cell fres when its potential reaches The patient will experience cramps and tingling. normally and returns to its original and as a result the cell will stabilze at a resting than normal This resting potential s Gloser to ,this cell wil fire My Answers Gtee o This question will be shown after yow complte previou H Arive

Explanation / Answer

Ans. When extracellular K+ is normal, the nerve depolarizes normally and return to its original resting potential.

When extracellular K+ is slighlty elevated. Less K+ will leave the nerve cell when itis repolarizing and as a result the cell will stabilize at a resting potential that is higher than normal. The resting potential is closer to threshold. Since a cell fires when its potential reaches resting potential, this cell will fire more easily The patient will experience cramps and tingling.   

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