What muscles are used to identify the ribeye steak or roast?

Online Answer
The ribeye consists of the longissimus dorsi (heart), complexus, and spinalis (also known as the crown or cap). The longissimus dorsi, or eye of the ribeye, is the meatiest portion of the rib subprimal. Every ribeye has an eye – it's the center of the cut, and the source of a lot of that delicious marbling.
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