▁mus cle ▁sheet ▁that ▁connected ▁the ▁cor ac oid ▁to ▁the ▁hum er us . ▁In ▁late ▁re pt ili ans ▁and ▁early ▁m amm als , ▁this ▁mus cle ▁structure ▁was ▁disp la ced ▁d ors ally ; ▁while ▁most ▁of ▁its ▁components ▁evol ved ▁into ▁the ▁p ector alis ▁major , ▁some ▁fib ers ▁eventually ▁attached ▁to ▁the ▁sc ap ula ▁and ▁evol ved ▁into ▁the ▁su pr asp in atus , ▁the ▁in fr asp in atus , ▁and ▁parts ▁of ▁the ▁sub sc ap ular is . ▁ ▁Add itional ▁images ▁ ▁References ▁ ▁Sal adin , ▁Kenneth . ▁An atom y ▁and ▁Phys i ology : ▁the ▁Unity ▁of ▁Form ▁and ▁Function . ▁ 7 th ▁ed ., ▁McG raw ▁Hill ▁Education , ▁ 2 0 1 4 . ▁pp .   3 4 3 , ▁ 3 4 6 , ▁ 4 9 1 , ▁ 5 4 3 . ▁F unk , ▁L enn ard . ▁Rot ator ▁C uff ▁Bi ome chan ics . ▁Should er doc . co . uk . ▁The F resh ▁Health care ▁Mark eting , ▁ 1 1 ▁Feb ▁ 2 0 1 6 . ▁Web . ▁ ▁External ▁links ▁ ▁Ex R x ▁ ▁Category : Mus cles ▁of ▁the ▁upper ▁lim b ▁Category : Rot ator ▁cu ff ▁Category : Should er ▁later al ▁rot ators <0x0A> </s> ▁The ▁Duch y ▁of ▁Mag de burg ▁() ▁was ▁a ▁province ▁of ▁Mar gra vi ate ▁of ▁Brandenburg ▁from ▁