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For the myocardial cells the RMP is at . (-85/0/+20/-15) mV. As the action potential from the specialized cells reach these myocardial cells by gap junctions, (VGNA/Slow VGK/ VGCA/ Fast VGK) channels open and. calcium) causing depolarization of the membrane to rushes in (sodium, potassium, (-85/0/+20). At this point the

For the myocardial cells the RMP is at . (-85/0/+20/-15) mV. As the action potential from the specialized cells reach these myocardial cells by gap junctions, (VGNA/Slow VGK/ VGCA/ Fast VGK) channels open and. calcium) causing depolarization of the membrane to rushes in (sodium, potassium, (-85/0/+20). At this point the

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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For the myocardial cells, the RMP is at _______________ (-85/0/+20/-15) mV. As the action potential from the specialized cells reaches these myocardial cells by gap junctions, ________________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels open and _______________ rushes in (sodium, potassium, calcium) causing depolarization of the membrane to _______________ (-85/0/+20). At this point, the ____________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels close and ______________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels open causing _______________ (sodium, potassium, calcium) to move _______________ (in/out) of the cell, and this brings the membrane potential to ______________ (-85/0/+20/-15) mV. At this point, __________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels also open causing ___________ (sodium, potassium, calcium) to enter the cell, and we see a plateau in the AP graph. The plateau continues for 200-300 ms, and then ___________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels open causing _____ (sodium, potassium, calcium) to move __________ (in/out) of the cell resulting in bringing the membrane potential back to -85 mV.
Transcribed Image Text:For the myocardial cells, the RMP is at _______________ (-85/0/+20/-15) mV. As the action potential from the specialized cells reaches these myocardial cells by gap junctions, ________________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels open and _______________ rushes in (sodium, potassium, calcium) causing depolarization of the membrane to _______________ (-85/0/+20). At this point, the ____________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels close and ______________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels open causing _______________ (sodium, potassium, calcium) to move _______________ (in/out) of the cell, and this brings the membrane potential to ______________ (-85/0/+20/-15) mV. At this point, __________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels also open causing ___________ (sodium, potassium, calcium) to enter the cell, and we see a plateau in the AP graph. The plateau continues for 200-300 ms, and then ___________________ (VGNa/Slow VGK/VGCa/Fast VGK) channels open causing _____ (sodium, potassium, calcium) to move __________ (in/out) of the cell resulting in bringing the membrane potential back to -85 mV.
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