Pacemaker cells in the SA node also contract with the rest of the cells in the heart wall. are special neurons that convey signals from the brain to the heart. O have a well-defined resting potential....

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Extracted text: Pacemaker cells in the SA node also contract with the rest of the cells in the heart wall. are special neurons that convey signals from the brain to the heart. O have a well-defined resting potential. O can spontaneously depolarize. All of the answers are correct. Ouectic n 11 M acer