The muscle that covers the vetral, pectoral region in rats is called pectoralis major.
Pectoralis major
In rats, pectoralis major is a muscle which can serve as a vascularized, innervated muscle flap model. The pectoralis major consists of two portions, the pectoralis superficialis and the pectoralis profundus.
Therefore, the muscle which covers the ventral, pectoral region in rats is pectoralis major.
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