Which layer of the pericardium consists of dense irregular connective tissue? 
Definitions:
Price-taker Firm
A firm that has no control over the market price and must accept the prevailing market price for its products.
Marginal Revenue
The extra revenue generated by the sale of an additional unit of a product or service.
Marginal Cost
The cost of producing one additional unit of a product or service.
Average Variable Cost
The total variable expenses divided by the number of units produced, representing the variable cost per unit.
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