Another action potential can be produced, but only if the stimulus is greater than the threshold stimulus. 1  corresponds to the period when the potassium channels are open (several milliseconds) 2  the nerve cell membrane becomes progressively more 'sensitive' (easier to stimulate) as the relative refractory period proceeds.
According to the International Banana Association, an average-sized banana weighs 120 grams. I'm assuming this does not include the peel because the discussion is in the context of nutritional information. + 78 others found this useful.
The number of calories in a banana depends on its size. A small banana measuring 6 to 6 7/8 inches long contains 90 calories, and one that is 7 to 7 7/8 inches long contains110 calories. Large and extra large bananas that range from 8 inches to over 9 inches contain between 121 and 135 calories each.