Which of the following O Some of the calcium needed for

Last updated: 12/16/2022

Which of the following O Some of the calcium needed for contraction comes from the extracellular space O Cells are short branched striated and connected by gap junctions The heart either contracts as a unit or not at all Cardiac muscle requires nervous system stimulation to contract O Some cardiac muscle cells are self excitable and initiate their own depolarization Question 22 Select the correct statement regarding an electrocardiogram EKG The Twave represents depolarization of the ventricles The P wave represents repolarization of the ventricles The QRS complex represents ventricular contraction olarization of the atria 1 pts