extrinsic auricular muscle posterior auricular muscle auricularis posterior post auricular muscle Wikipedia:Posterior_auricular_muscle The posterior auricular muscle consists of two or three fleshy fasciculi, which arise from the mastoid portion of the temporal bone by short aponeurotic fibers. They are inserted into the lower part of the cranial surface of the concha. post-auricular muscle SCTID:244761000 UBERON:0018110 FMA:46857