<Tr> <Th_colspan="2"> Identifiers </Th> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> The gluteal muscles are a group of three muscles which make up the buttocks: the gluteus maximus, gluteus medius and gluteus minimus . The three muscles originate from the ilium and sacrum and insert on the femur . The functions of the muscles include extension, abduction, external rotation and internal rotation of the hip joint . </P> <P> The gluteus maximus is the largest and most superficial of the three gluteal muscles . It makes up a large portion of the shape and appearance of the hips . It is a narrow and thick fleshy mass of a quadrilateral shape, and forms the prominence of the nates . The gluteus medius is a broad, thick, radiating muscle, situated on the outer surface of the pelvis . It lies profund to the gluteus maximus and its posterior third is covered by the gluteus maximus, its anterior two - thirds by the gluteal aponeurosis, which separates it from the superficial fascia and integument . The gluteus minimus is the smallest of the three gluteal muscles and is situated immediately beneath the gluteus medius . </P>

What are the 3 muscles in your buttocks
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