oblique muscle of auricle oblique muscle of auricle the oblique muscle of auricle (oblique auricular muscle or tod muscle) is an intrinsic muscle of the outer ear. for other muscles called "oblique", see oblique muscle. oblique muscle of auriclethe muscles of the auriculadetailsnerveposterior auricular nerve from the facial nerveidentifierslatinmusculus obliquus auriculaeta98a15.3.01.044ta22100fma48986anatomical terms of muscle the oblique muscle of auricle is placed on the cranial surface of the pinna. it consists of a few fibers extending from the upper and back part of the concha to the convexity immediately above it.