[Solved] Action potentials pass from one myocardial cell to another through areas of low electrical resistance called A)gap junctions. B)fibrous heart rings. C)electromagnetic discs. D)sarcolemma sclerotic plaques. E)tight junctions. LIFO Assumption: An inventory valuation method in which the last items purchased or produced are the first to be expensed (Last In, First Out). Perpetual Inventory: A method of accounting for inventory that records the sale or purchase of inventory immediately through the use of computerized point-of-sale systems and enterprise asset management software. Retail Inventory Method: An accounting method used to estimate the ending inventory balance of a retail store by applying a cost-to-retail price ratio to the sales for the period. Balance Sheet: A financial statement that provides a snapshot of a company's financial position, including assets, liabilities, and shareholders' equity at a specific point in time.