Both the chemical and electrical gradients of potassium favors its movement out of the cell. True False

What direction do potassium ions flow through voltage gated potassium channels in cardiac pacemaker and cardiac contractile cells?

The MOST LIKELY effect of increasing the potassium conductance in a cardiac pacemaker cell would be

The plasma membrane of an excitable cell is more permeable to potassium ions becauseMultiple Choiceprotein molecules cannot exit through the cell membrane.calcium ions block Na+ and Cl- channels.of its positive electrical charge.there are more leak channels for K+ than Na+.there are more gated channels for K+.

.How do potassium ions primarily enter animal cells?a.Active transport by sodium-potassium pumpb.Passive diffusion through the lipid bilayerc.Facilitated diffusion through channel proteins

Which of the following changes would hyperpolarize a cell, that is, make the resting membrane potential more negative?Group of answer choicesdecrease extracellular levels of potassiumnone of the choices are correctincrease extracellular levels of potassiumdecrease the permeability of cells to potassiumdecrease the temperature