Gastrointestinal Physiology curves

2 curves · untimed · read the graph, then answer the questions on it.

Slow waves, spikes, and tensionCurve 1 of 2 · Q 1/5

Intestinal smooth muscle recorded over three slow waves. The upper trace is membrane potential (the dashed line is the threshold for spike potentials); the lower trace is the tension the muscle develops.

↑ Membrane potential (upper) and tension (lower) · → Time (seconds)

What generates the rhythmic depolarization at point A?

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