mheducation.com/hm.tpx Lab Exercise 46 EKG Question 17 (of 17) points plete each
ID: 270310 • Letter: M
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mheducation.com/hm.tpx Lab Exercise 46 EKG Question 17 (of 17) points plete each sentence by dragging the labels to the appropriate blanks. Then place each sentence in a logical order beginning wit Drag the text blocks below into their correct order. Cardiocytes at resting membrane potential of cations diffusing from adjacent cardiocytes through gap junctions. receve - voltage-regulated slow-calcium channels 90 mV out of the ceill Toward the end of depolarization, open while the sodium channels close. Additional sodium which allows sodium to rapidly decreased permeability channels are opened causing the cell to voltage-regulated potassium voltage-regulated fast-calcium enter the cel depolarize The drift toward threshold along the ICF membrane causes to open Toward the end of cardiocyte depolarization and calcium channels close ligand-regulated sodium channels voltage-regulated sodium channels to extracellular 55 mv 70 mV increased permeability calcium, positive charge continues to enter the cell which prolongs the duration of depolarization Movement of potassium to the ECF repolarzes the membrane Reset ZoomExplanation / Answer
Cardiocytes at resting membrane potential of -90mV receive cations diffusing from adjacent cardiocytes through gap junctions.
Towards the end of depolarization Voltage regulated potassium channels open while the sodium channels close
Additional sodium channels are opened which allows the sodium to rapidly enter the cell causing the cell to depolarize
The drift toward threshold along the icf membrane causes voltage regulated sodium channels to open
Towards the end of cardiocyte depolarization voltage regulated potassium channels open and calcium channels close
With increased permeability to extracellular calcium positive charge continues to enter the cell which prolongs the duration of depolarization
Movement of potassium out of the cell to the ECF repolarizes the membrane.
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