. Text-book of anatomy and physiology for nurses. r the pelvic viscera. The PelvisâExterior. Three gluteal muscles.âFrom the three gluteal lines of the oscoxas and the spaces above them, arise three gluteal muscles. Gluteus minimus. Origin.âThe in-ferior line and space above it. Insertion.âThe front of great trochanter. Action.âIt abducts the thigh and ro-tates the femur slightly inward (so thatthe foot turns in). Gluteus medius. Origin.âThe ante-iior or middle line and space above it uplo the crest. Insertion.âThe outer sur-I ice of great trochanter. Action.âAbduction of the femur and-ome rot
. Text-book of anatomy and physiology for nurses. r the pelvic viscera. The PelvisâExterior. Three gluteal muscles.âFrom the three gluteal lines of the oscoxas and the spaces above them, arise three gluteal muscles. Gluteus minimus. Origin.âThe in-ferior line and space above it. Insertion.âThe front of great trochanter. Action.âIt abducts the thigh and ro-tates the femur slightly inward (so thatthe foot turns in). Gluteus medius. Origin.âThe ante-iior or middle line and space above it uplo the crest. Insertion.âThe outer sur-I ice of great trochanter. Action.âAbduction of the femur and-ome rotation outward. Nerve of both.âSuperior gluteal. Gluteus maximus. Origin.â The posterior line and space behindIt to the crest (also from the back of^dcrum). Insertion.âThe back ofgreat trochanter and the shaft belowit, also the deep fascia, or fascia âExternal rotation offemur; it is also a powerful extensorof the hip-joint when one rises fromthe sitting position, or in mountingsteps. Nerve.âInferior Fig. 85.âThe Gluteal , 2, 3, 4, 5, 5, Gluteus maximus;6, 7,8, 10, fascia lata; 9, lower end oftensor fasciae latae; 11, upper portionof biceps femoris; 12, upper portionof semitendinosus; 13, upper portionof semimembranosus; 14, gracilis.â(Goulds Dictionary.) It also abducts the thigh. Obturator extemus. Origin.âThe obturator membrane and bone aroundit. Insertion.âThe fossa of great trochanter. Action.âExternal rotationof femur. (Fig. 78.)Nerve.âObturator. Practical point.âObserve the number of muscles for externalrotation and note that the usual position of the foot is with the toesturned out. THE QUADRICEPS FEMORIS, 105 Muscles of tee Thigh. .Anterior. On the front and the sides of the femur are the muscles whichextend the legâfour in numberâwhich blend at their insertion,therefore constituting a four-headed mus-cle, the quadriceps femoris. They are therectus femoris, the vastus lateralis, vastusmedialis and the vastus intermediu
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