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If you were able to artificially alter the membrane permeability of pacemaker cells so that sodium in flux is more rapid what would happen?
threshold is reached more quickly and heart rate would increase
Which cells cause resting membrane potentials to continually depolarize?
Cells with unstable resting membrane potentials, such as pacemaker cells in the heart or neurons in the brain, can continually depolarize due to the presence of a "funny" current (If) that slowly depolarizes the cell until it reaches the threshold for an action potential to be generated.
What are pacemaker cells in the human body?
They Are A Special Group Of Nerve Cells. Nerve Signals From The Brain Control The Pacemaker, Making It Go Faster Or Slower When Required. Specialist cells in the heart which have autorhythmicity.
What region of the heart depolarizes spontaneous?
pacemaker cells
What are the group of cells that adjusts the heart rate?
Pacemaker
What is the sa node?
The SA node is the "pacemaker" of the heart. Cells in the SA node are called "pacemaker" cells and they direct the contraction rate of the entire heart by generating action potentials.
Intercalated discs and pacemaker cells are characteristic of?
cardiac muscle
The SA node is the normal pacemaker of the heart because the SA node?
depolarizes to its threshold potential before other pacemakers in the heart
Is a pacemaker a group of cells located in the left atrium?
A pacemaker is a device inserted into the heart to regulate the heart beats or heart rate
Pacemaker cells of the small intestine that regulate slow wave contractions are?
interstitial cells of Cajal
The MOS threshold should be marked with edge markers on each side?
Not--5
What is a group of cells in the right atrium that regulates a heartbeat called?
pacemaker
